Revert latest accidental commit.

[thirdparty/gcc.git] / libcpp / ChangeLog

2005-04-27  Andris Pavenis  <pavenis@latnet.lv>

	* files.c: Include io.h for DJGPP to get prototype of setmode.

2005-04-19  Per Bothner  <per@bothner.com>

	PR preprocessor/20907
	* line-map.c (linemap_line_start): Fix bug when we need to increse
	column_bits but can re-use the current line_map.

2005-04-19  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

	* system.h (fopen, fdopen, freopen): Define these to the unlocked
	libiberty functions.

2005-04-11  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

	* configure.ac (libcpp_UNLOCKED_FUNCS): New.
	(AC_CHECK_FUNCS, AC_CHECK_DECLS): Check for libcpp_UNLOCKED_FUNCS.
	* system.h (putchar, getc, getchar, clearerr, feof, fileno,
	fflush, fgetc, fgets, ferror, fread): Redefine to the associated
	_unlocked function.
	(fwrite_unlocked): Fix prototype.
	
	* configure, config.in: Regenerate.

2005-04-05  Jakub Jelinek  <jakub@redhat.com>

	PR preprocessor/19475
	* macro.c (create_iso_definition): For < ISO C99, don't
	pedwarn if there is no whitespace between macro name and its
	replacement, but the replacement starts with a basic character
	set character.

2005-03-28  Andreas Jaeger  <aj@suse.de>

	* lex.c (warn_about_normalization): Cast field width to int to
	avoid warning.

2005-03-19  Joseph S. Myers  <joseph@codesourcery.com>

	* configure.ac: Consistently use solaris2.1[0-9]* instead of
	solaris2.1[0-9].
	* configure: Regenerate.

2005-03-15  Geoffrey Keating  <geoffk@apple.com>

	* charset.c (_cpp_valid_ucn): In identifiers, reject a partial
	UCN rather than printing an error.

2005-03-14  Geoffrey Keating  <geoffk@apple.com>

	* lex.c (forms_identifier_p): Disable UCNs in C89 mode.

2005-03-14  Geoffrey Keating  <geoffk@apple.com>
	
	* init.c (cpp_create_reader): Default warn_normalize to normalized_C.
	* charset.c: Update for new format of ucnid.h.
	(ucn_valid_in_identifier): Update for new format of ucnid.h.
	Add NST parameter, and update it; update callers.
	(cpp_valid_ucn): Add NST parameter, update callers.  Replace abort
	with cpp_error.
	(convert_ucn): Pass normalize_state to cpp_valid_ucn.
	* internal.h (struct normalize_state): New.
	(INITIAL_NORMALIZE_STATE): New.
	(NORMALIZE_STATE_RESULT): New.
	(NORMALIZE_STATE_UPDATE_IDNUM): New.
	(_cpp_valid_ucn): New.
	* lex.c (warn_about_normalization): New.
	(forms_identifier_p): Add normalize_state parameter, update callers.
	(lex_identifier): Add normalize_state parameter, update callers.  Keep
	the state current.
	(lex_number): Likewise.
	(_cpp_lex_direct): Pass normalize_state to subroutines.  Check
	it with warn_about_normalization.
	* makeucnid.c: New.
	* ucnid.h: Replace.
	* ucnid.pl: Remove.
	* ucnid.tab: Make appropriate for input to makeucnid.c.  Remove
	comments about obsolete version of C++.
	* include/cpplib.h (enum cpp_normalize_level): New.
	(struct cpp_options): Add warn_normalize field.

2005-03-11  Geoffrey Keating  <geoffk@apple.com>

	* directives.c (glue_header_name): Update call to cpp_spell_token.
	* internal.h (_cpp_interpret_identifier): New.
	* charset.c (_cpp_interpret_identifier): New.
	(_cpp_valid_ucn): Allow UCN version of '$'.
	* lex.c (lex_identifier): Add extra parameter to indicate if initial
	character was '$' or '\'.  Support identifiers with UCNs.
	(forms_identifier_p): Allow UCNs.
	(_cpp_lex_direct): Pass extra parameter to lex_identifier.
	(utf8_to_ucn): New.
	(cpp_spell_token): Add FORSTRING parameter.  Use it.
	(cpp_token_as_text): Update call to cpp_spell_token.
	(cpp_output_token): Write UCNs back out.
	(stringify_arg): Update call to cpp_spell_token.
	(paste_tokens): Likewise.
	(cpp_macro_definition): Likewise.
	* macro.c (stringify_arg): Likewise.
	(paste_tokens): Likewise.
	(cpp_macro_definition): Likewise.
	* include/cpplib.h: Add parameter to cpp_spell_token.

2005-03-04  Jakub Jelinek  <jakub@redhat.com>

	PR bootstrap/20282
	PR bootstrap/20305
	* macro.c (replace_args, cpp_get_token): Copy whole
	cpp_token_u instead of just cpp_string field from it.

2005-02-28  Devang Patel  <dpatel@apple.com>

	* directives.c (do_line): Save sysp early before line table is
	realloc'ed.
	
2005-02-20  Zack Weinberg  <zack@codesourcery.com>

	PR 18785
	* charset.c (LAST_POSSIBLY_BASIC_SOURCE_CHAR): New helper macro.
	(cpp_host_to_exec_charset): New function.
	* include/cpplib.h: Declare cpp_host_to_exec_charset.

2005-02-19  Devang Patel  <dpatel@apple.com>

	* charset.c (_cpp_convert_input): Check '\r' before inserting
	'\n' at the end.

2005-02-15  Eric Christopher  <echristo@redhat.com>

	PR preprocessor/19077
	* macro.c (cpp_macro_definition): Move handling of whitespace
	to PREV_WHITE conditional. Remove overloading of len
	variable.

2005-02-14  Kazu Hirata  <kazu@cs.umass.edu>

	* directives.c, files.c, init.c, internal.h, macro.c, pch.c,
	traditional.c: Update copyright.

2005-02-14  Paolo Bonzini  <bonzini@gnu.org>

	PR bootstrap/19818
	* configure.ac: Check for declaration of basename and getopt.
	* config.in: Regenerate.
	* configure: Regenerate.
	* internal.h (ustrcspn): New.
	* macro.c (create_iso_definition): Fix allocation of memory.
	(padding_token): Add cast to remove const-ness.
	* pch.c (cpp_read_state): Use ustrcspn.

2005-02-08  Mike Stump  <mrs@apple.com>

	* files.c (pchf_adder): Remove.
	(struct pchf_adder_info): Likewise.
	(_cpp_save_file_entries): Write out all files so that #import works.

2005-01-23  Joseph S. Myers  <joseph@codesourcery.com>

	* configure: Regenerate.

2005-01-11  Tobias Schlueter  <tobias.schlueter@physik.uni-muenchen.de>

	* include/cpplib.h (c_lang): Fix comment to say cpp_create_reader.

	* include/cpplib.h: Also update copyright years.

2005-01-03  Geoffrey Keating  <geoffk@apple.com>

	* files.c (_cpp_find_file): Add files found by search_path_exhausted
	to the list of all files.

2005-01-01  Gabriel Dos Reis  <gdr@integrable-solutions.net>

	* internal.h: Update references to Cpp lib filenames.
	* directives.c: Likewise.
	* init.c: Likewise.
	* macro.c: Likewise.
	* traditional.c: Likewise.

2004-12-15  Eric Botcazou  <ebotcazou@libertysurf.fr>

	PR preprocessor/15167
	* files.c (destroy_cpp_file): New function.
	(should_stack_file): Make a new file if the
	compared file is still stacked.

2004-11-28  Nathanael Nerode  <neroden@gcc.gnu.org>

	PR preprocessor/17610
	* directives.c (do_include_common): Error out if an empty filename
	is given for #include (or #include_next or #import).

2004-11-27  Roger Sayle  <roger@eyesopen.com>
	    Zack Weinberg  <zack@codesourcery.com>

	* internal.h: Replace all uses of uchar with unsigned char.
	* include/cpp-id-data.h: Likewise.  Guard typedef of uchar
	with !IN_GCC, so uchar is only defined whilst building libcpp.

2004-11-24  Kelley Cook  <kcook@gcc.gnu.org>

	* aclocal.m4: Regenerate.

2004-11-24  Roger Sayle  <roger@eyesopen.com>

	PR preprocessor/15824
	* configure.ac: Correct HAVE_UCHAR test to #include <sys/types.h>
	directly, instead of the non-existant "system.h" and "ansidecl.h".
	* configure: Regenerate.

2004-11-23  Daniel Jacobowitz  <dan@codesourcery.com>
	    Joseph Myers  <joseph@codesourcery.com>

	* internal.h (struct lexer_state): Add in_deferred_pragma.
	* directives.c (struct pragma_entry): Add allow_expansion.
	(insert_pragma_entry): Take allow_expansion flag.
	(register_pragma): Likewise.
	(cpp_register_pragma): Likewise.
	(_cpp_init_internal_pragmas): Update calls to cpp_register_pragma.
	(do_pragma): Honor allow_expansion.
	(cpp_handle_deferred_pragma): Set in_deferred_pragma.
	* include/cpplib.h (cpp_register_pragma): Update prototype.

2004-11-18  Daniel Jacobowitz  <dan@codesourcery.com>
	    Mark Mitchell  <mark@codesourcery.com>

	* configure.ac (i[34567]86-*-solaris2.1[0-9]*): Set
	need_64bit_hwint=yes.
	* configure: Regenerate.

2004-11-09  Joseph S. Myers  <joseph@codesourcery.com>

	* Makefile.in ($(PACKAGE).pot): New rule.  Depend on
	po/$(PACKAGE).pot.
	(po/$(PACKAGE).pot): Use ":" instead of "," in --keyword
	arguments.  Add keywords _, N_, SYNTAX_ERROR and SYNTAX_ERROR2.
	Remove local srcdir path from generated file.

2004-11-04  Zack Weinberg  <zack@codesourcery.com>
	    Gerald Pfeifer  <gerald@pfeifer.com>

	* internal.h (HAVE_ICONV): Undefine if we do not have HAVE_ICONV_H
	as well.

2004-10-27  Zack Weinberg  <zack@codesourcery.com>

	PR 18075
	* directives.c (do_pragma): Do not defer pragmas which are unknown.
	(cpp_handle_deferred_pragma): Add cast to silence warning.

2004-10-14  Joseph S. Myers  <jsm@polyomino.org.uk>

	* errors.c (_cpp_begin_message): Print "error: " for errors.

2004-10-10  Andreas Jaeger  <aj@suse.de>

	* makedepend.c: Include mkdeps.h for prototype of deps_add_vpath.
	* Makefile.in (makedepend.o): Add dependency on mkdeps.h.

2004-10-08  Andrew Pinski  <pinskia@physics.uc.edu>

	* pch.c (cpp_write_pch_state): Remove variable z as it is not
	used.
	(cpp_read_state): Remove unused variables, m, d and mac_count.

2004-09-29  Per Bothner  <per@bothner.com>

	* directives.c (cpp_handle_deferred_pragma):  Save, clear and restore
	cb.line_change.  Otherwise do_pragma will call the line_change
	call-back with a meaningless line number.

2004-09-24  Zack Weinberg  <zack@codesourcery.com>

	* configure.ac: Move AC_PROG_MAKE_SET, AC_PROG_INSTALL to
	programs cluster. Use ACX_PROG_CC_WARNING_OPTS,
	ACX_PROG_CC_WARNING_ALMOST_PEDANTIC, ACX_PROG_CC_WARNINGS_ARE_ERRORS.
	* aclocal.m4, configure: Regenerate.
	* init.c: Include localedir.h.
	* Makefile.in (WARN_CFLAGS, ALL_CFLAGS): New variables.
	(DEFS): Delete.
	(.c.o): Use $(ALL_CFLAGS).
	(localedir.h, localedir.hs): New rules.
	(clean): Use rm -rf to remove directories.
	(distclean): Also delete localedir.h and localedir.hs.
	(init.o): Update dependencies.

2004-09-22  Kelley Cook  <kcook@gcc.gnu.org>

	* Makefile.in (aclocal.m4): Update dependencies.
	* configure.ac (AC_CONFIG_MACRO_DIR): New.
	* aclocal.m4, configure: Regenerate.

2004-09-17  Zack Weinberg  <zack@codesourcery.com>

	* charset.c (_cpp_destroy_iconv, emit_numeric_escape)
	(_cpp_convert_input, _cpp_default_encoding): Add comments.
	Some other comments in this file also tweaked.

	* directives.c (do_pragma): Save current buffer position
	before lexing the pragma keywords; don't call
	_cpp_backup_tokens in the defer_pragmas case.

2004-09-15  Per Bothner  <per@bothner.com>

	* include/line-map.h (line_map_start):  Add parameter names so
	preceding comment makes sense.
	(linemap_add):  Remove from comment mention of non-existing parameter.

2004-09-09  Matt Austern  <austern@apple.com>
	    Zack Weinberg  <zack@codesourcery.com>

	* include/cpplib.h (TTYPE_TABLE): Remove CPP_ and SPELL_
	prefixes throughout.  Add entry for PRAGMA.  Remove
	unnecessary "= 0" from EQ.
	(enum cpp_ttype): Adjust OP and TK definitions to restore
	prefixes, via token-paste.
	(CPP_LAST_EQ, CPP_FIRST_DIGRAPH, CPP_LAST_PUNCTUATOR, CPP_LAST_CPP_OP):
	Change from #defines to additional cpp_ttype enumerators.
	(struct cpp_options): Add defer_pragmas.
	(cpp_handle_deferred_pragma): Prototype new interface.

	* internal.h (struct cpp_reader): Add directive_result.
	* directives.c (struct pragma_entry): Add is_internal field;
	give boolean fields type bool.
	(start_directive): Initialize pfile->directive_result.type.
	(_cpp_do__Pragma): Likewise.
	(run_directive): Do not crash if pfile->buffer->prev is NULL.
	(insert_pragma_entry): Add 'internal' argument; set new->is_internal
	from it.
	(register_pragma): New static function, bulk of former
	cpp_register_pragma here; add 'internal' argument, pass along
	to insert_pragma_entry.
	(cpp_register_pragma): Now a wrapper around register_pragma which
	always passes false for 'internal' argument.
	(_cpp_init_internal_pragmas): Call register_pragma directly, passing
	true for 'internal'.
	(do_pragma): If CPP_OPTION (pfile, defer_pragmas) and this isn't
	an internal pragma, save text till the end of the line as a CPP_PRAGMA
	token instead of executing the pragma.
	(cpp_handle_deferred_pragma): New interface.
	* lex.c (token_spellings): Adjust OP and TK definitions to
	match changes to cpplib.h.
	(_cpp_lex_token): Check for a directive-result token and
	return it if present.
	(cpp_token_val_index): Handle CPP_PRAGMA.
	* macro.c (cpp_builtin_macro_text): Correct comment.
	(builtin_macro): Handle directive-result tokens from _cpp_do__Pragma.

2004-09-06  Serge Belyshev  <belyshev@lubercy.com>

	PR preprocessor/14699
	* symtab.c (ht_dump_statistics): Change type of sum_of_squares
	from size_t to double.

2004-08-28  Andreas Schwab  <schwab@suse.de>
	    Andreas Jaeger <aj@suse.de>

	* configure.ac: Set PACKAGE correctly.
	* configure: Regenerated.

2004-08-25  Paolo Bonzini  <bonzini@gnu.org>

	* Makefile.in: Add back top_builddir.

2004-08-25  Paolo Bonzini  <bonzini@gnu.org>

	* configure.ac: Replace Automake macro invocations
	with manual Autoconf checks and substitutions.
	* configure: Regenerate.
	* aclocal.m4: Regenerate.
	* config.in: Regenerate.
	* Makefile.am: Removed.
	* Makefile.in: Heavy simplification and reorganization.

2004-08-09  Mark Mitchell  <mark@codesourcery.com>

	* configure.ac (arm*-*-eabi*): New target.
	(arm*-*-symbianelf*): Likewise.
	* configure: Regenerated.

2004-07-24  Bernardo Innocenti  <bernie@develer.com>

	* internal.h (xnew, xcnew, xnewvec, xcnewvec, xobnew): Remove.
	* directives.c: Use XNEW-family macros from libiberty.
	* lex.c: Likewise.
	* macro.c: Likewise.
	* cpplib.h (cpp_deps_style): Export enum with name.

2004-07-23  Matthias Klose  <doko@debian.org>

	* init.c (init_library): Use PACKAGE for the text domain.

2004-07-16  Andris Pavenis  <pavenis@latnet.lv>

	PR preprocessor/16366
	* internal.h (struct cpp_reader): New field dir_hash.
	* files.c (make_cpp_dir): Use dir_hash, not file_hash.
	(_cpp_init_files, _cpp_cleanup_files): Update for new field.

2004-07-04  Neil Booth  <neil@duron.akihabara.co.uk>

	PR preprocessor/16192
	PR preprocessor/15913
	PR preprocessor/15572
	* expr.c (_cpp_parse_expr): Handle remaining cases where an
	expression is missing.
	* init.c (post_options): Traditional cpp doesn't do // comments.

2004-06-30  Per Bothner  <per@bothner.com>

	* include/line-map.h (fileline):  Remove old typedef.
	* internal.h (struct cpp_reader):  Use source_location typedef instead.

2004-06-26  Zack Weinberg  <zack@codesourcery.com>

	Partially revert patch of 2004-06-05.
	* files.c (search_cache): Remove pfile argument.  Don't check
	for file that would be found by "" or <> search here...
	(_cpp_find_file): ...do it here, before calling find_file_in_dir.
	Do not apply directory-of-current-file correction to files
	found by this check.  Rearrange code slightly.

2004-06-21  Geoffrey Keating  <geoffk@apple.com>

	* files.c (should_stack_file): Correct swapped parameters to call
	to cb.read_pch.
	* pch.c (cpp_valid_state): Handle -fpreprocessed.

2004-06-15  Paolo Bonzini  <bonzini@gnu.org>

	* Makefile.in: Regenerate with automake 1.8.5.
	* aclocal.m4: Likewise.
	* configure: Regenerate.

2004-06-11  Zack Weinberg  <zack@codesourcery.com>

	* configure.ac: Don't invoke ACX_HEADER_STDBOOL.
	* configure, config.in: Regenerate.
	* system.h: Unconditionally define bool as unsigned char,
	BOOL_BITFIELD as unsigned int.
	* .cvsignore: New file.

2004-06-09  Geoffrey Keating  <geoffk@apple.com>

	* traditional.c (push_replacement_text): Set macro->traditional.
	(save_replacement_text): Likewise.
	* pch.c (cpp_write_pch_state): Don't write list of defined macros.
	(struct save_macro_item): Delete.
	(struct save_macro_data): Use a character array not the previous
	structured format.
	(save_macros): Save macro as text not as internal structures.
	(cpp_prepare_state): Update for changes to save_macro_data.
	(cpp_read_state): Don't read macros defined in PCH.  Restore
	-D macros as text.
	* macro.c (create_iso_definition): Honour alloc_subobject.
	Clear traditional flag.
	(_cpp_create_definition): Honour alloc_subobject.
	* lex.c (cpp_token_val_index): New.
	* internal.h: Include cpp-id-data.h.
	(uchar): Move definition to cpp-id-data.h.
	(U): Likewise.
	(cpp_macro): Likewise.
	* directives.c (struct answer): Move to cpp-id-data.h.
	(do_assert): Honour alloc_subobject.

	* include/symtab.h (struct ht): Add field 'alloc_subobject'.
	* include/cpplib.h (struct cpp_string): Add GTY marker.
	(enum cpp_token_fld_kind): New.
	(struct cpp_token): Add GTY markers.
	(cpp_token_val_index): Prototype.
	(CPP_HASHNODE_VALUE_IDX): New.
	(struct cpp_hashnode): Don't skip fields of 'value' when marking.
	* include/cpp-id-data.h: New file.

2004-06-09  Paolo Bonzini  <bonzini@gnu.org>

	* Makefile.am (all-local): New.
	* Makefile.in: Regenerate.

2004-06-06  Roger Sayle  <roger@eyesopen.com>

	* Makefile.am (LIBICONV): Declare.
	(makedepend_LDADD): Use LIBICONV.
	* Makefile.in: Regenerate.

2004-06-05  Andrew Pinski  <pinskia@physics.uc.edu>

	* Makefile.am (LIBINTL): Declare
	(makedepend_LDADD): Use LIBINTL.
	* Makefile.in: Regenerate.

2004-06-05  Zack Weinberg  <zack@codesourcery.com>

	* Makefile.am: Add makedepend.
	* Makefile.in, aclocal.m4: Regenerate.
	* charset.c: Insert a space to avoid a warning.
	* directives.c: Include mkdeps.h.
	(_cpp_handle_directive): Reenable macro expander if appropriate.
	(undefine_macros): Inline body of _cpp_free_definition for speed.
	Do not call undef callback or _cpp_warn_if_unused_macro.
	(cpp_get_deps): New interface.
	* files.c (search_cache): Add pfile argument.  Check for file
	that would be found by "" or <> search here...
	(_cpp_find_file): ...not here.  Correct recorded start_dir of
	files found by directory-of-current-file search that would be
	found by "" or <> search.
	* init.c (cpp_add_dependency_target): Delete.
	* internal.h (struct lexer_state): Add discarding_output flag.
	* lex.c (lex_identifier): Compute hash function while scanning.
	* macro.c (cpp_scan_nooutput): Disable macro expansion outside
	directives.
	* makedepend.c: New file.
	* mkdeps.c (struct deps): Add vpath vector.
	(apply_vpath, deps_add_vpath): New function.
	(deps_free): Free vpath vector.
	(deps_add_dep, deps_add_target): Use apply_vpath.
	* symtab.c (calc_hash): Use HT_HASHSTEP and HT_FINISH.
	(ht_lookup_with_hash): New function.
	* cpplib.h, mkdeps.h: Update prototypes.
	* symtab.h: Update prototypes.
	(HT_HASHSTEP, HT_FINISH): New macros.

2004-05-29  Geoffrey Keating  <geoffk@apple.com>

	* symtab.c (ht_create): Set entries_owned.
	(ht_destroy): Honour entries_owned.
	(ht_expand): Likewise.
	(ht_load): New.
	* include/symtab.h (struct ht): New field 'entries_owned'
	(ht_load): New prototype.

2004-05-26  Paolo Bonzini  <bonzini@gnu.org>

	PR bootstrap/15651
	* configure.ac: Fix m4 quoting when picking
	the size of HOST_WIDE_INT.
	* configure: Regenerate.

2004-05-25  Paolo Bonzini  <bonzini@gnu.org>

	* Makefile.am: the correct directory for
	gettext include files is given by @INCINTL@.
	* Makefile.in: Regenerate.

2004-05-24  Paolo Bonzini  <bonzini@gnu.org>

	* system.h [!ENABLE_NLS]: dgettext takes two
	parameters.

2004-05-23  Paolo Bonzini  <bonzini@gnu.org>

	Moved libcpp from the gcc subdirectory to the toplevel.
	* Makefile.am: New file.
	* Makefile.in: Regenerate.
	* configure.ac: New file.
	* configure: Regenerate.
	* config.in: Regenerate.
	* charset.c: Moved from gcc/cppcharset.c.  Add note about
	brokenness of input charset detection.  Adjust for change
	in name of cppucnid.h.
	* errors.c: Moved from gcc/cpperror.c.  Do not include intl.h.
	* expr.c: Moved from gcc/cppexp.c.
	* files.c: Moved from gcc/cppfiles.c.  Do not include intl.h.
	Remove #define of O_BINARY, it is in system.h.
	* identifiers.c: Moved from gcc/cpphash.c.
	* internal.h: Moved from gcc/cpphash.h.  Change header
	guard name.  All other files adjusted to match name change.
	* init.c: Moved from gcc/cppinit.c.
	(init_library) [ENABLE_NLS]: Call bindtextdomain.
	* lex.c: Moved from gcc/cpplex.c.
	* directives.c: Moved from gcc/cpplib.c.
	* macro.c: Moved from gcc/cppmacro.c.
	* pch.c: Moved from gcc/cpppch.c.  Do not include intl.h.
	* traditional.c: Moved from gcc/cpptrad.c.
	* ucnid.h: Moved from gcc/cppucnid.h.  Change header
	guard name.
	* ucnid.pl: Moved from gcc/cppucnid.pl.
	* ucnid.tab: Moved from gcc/cppucnid.tab.  Change header
	guard name.
	* symtab.c: Moved from gcc/hashtable.c.
	* line-map.c: Moved from gcc.  Do not include intl.h.
	* mkdeps.c: Moved from gcc.
	* system.h: New file.
	* include/cpplib.h: Moved from gcc.  Change header guard name.
	* include/line-map.h: Moved from gcc.  Change header guard name.
	* include/mkdeps.h: Moved from gcc.  Change header guard name.
	* include/symtab.h: Moved from gcc/hashtable.h.  Change header
	guard name.