Warning fixes:

Warning fixes:

        * Makefile.in (parse.o): Depend on $(CONFIG_H) and
        $(srcdir)/../system.h.
        (class.o): Depend on $(PARSE_H) and $(srcdir)/../output.h.
        (jcf-parse.o): Depend on $(srcdir)/../toplev.h.
        (jcf-write.o): Likewise.
        (jv-scan.o): Depend on $(CONFIG_H) and $(srcdir)/../system.h.
        (mangle.o): Depend on $(srcdir)/../toplev.h.
        (parse-scan.o): Depend on $(CONFIG_H) and $(srcdir)/../system.h.
        (zextract.o): Depend on $(CONFIG_H) and $(srcdir)/../system.h.
        * class.c: Include output.h and parse.h.
        (mangled_classname): Add the `const' keyword to a char*.
        (find_named_method): Hide unused function definition.
        (build_utf8_ref): Change type of variable `c' to unsigned char.
        Use ISALPHA/ISDIGIT instead of isalpha/isdigit.
        (build_class_ref): Add the `const' keyword to a char*.
        (layout_class_method): Remove unused variable `buf'.
        * decl.c (find_local_variable): Remove unused variable `rtl'.
        (pushdecl): Likewise for variables `different_binding_level' and
        `oldglobal'.
        (pushlevel): Mark parameter `unused' with ATTRIBUTE_UNUSED.
        (maybe_build_cleanup): Likewise for parameter `decl'.
        * except.c (expand_start_java_handler): Mark parameter `range'
        with ATTRIBUTE_UNUSED.
        * expr.c: Include except.h.
        (pop_type): Remove unused variable `i'.
        (pop_value): Likewise for variables `n_words' and `i'.
        (expand_java_arrayload): Likewise for variable `convert'.
        (java_lang_expand_expr): Likewise for variables `op0', `type',
        `mode', `unsignedp', `node' and `elements'.
        (expand_byte_code): Likewise for variables `prev_eh_ranges' and
        `eh_ranges'.
        (process_jvm_instruction): Add a `const' qualifier to a char*.
        * gjavah.c (output_directory): Add the `const' keyword to a char*.
        (temp_directory): Likewise.
        (print_c_decl): Likewise.
        (print_method_info): Likewise.
        (decode_signature_piece): Likewise.
        (print_mangled_classname): Likewise.
        * java-except.h: Provide prototypes for maybe_start_try,
        maybe_end_try and add_handler.
        * java-tree.h (mangled_classname): Add the `const' keyword to a char*.
        (parse_error_context): Likewise.  Also add ATTRIBUTE_PRINTF_2.
        (pushdecl_top_level, alloc_class_constant, unicode_mangling_length,
        init_expr_processing, push_super_field, init_class_processing,
        can_widen_reference_to, class_depth, verify_jvm_instructions,
        maybe_pushlevels, maybe_poplevels, process_jvm_instruction,
        set_local_type, merge_type_state, push_type, load_type_state,
        add_interface, find_in_current_zip, append_gpp_mangled_classtype,
        emit_unicode_mangled_name): Add prototypes.
        * jcf-dump.c (print_constant): Add the `const' keyword to a char*.
        (print_signature_type): Use ISDIGIT, not isdigit.
        (print_signature): Remove unused variable `j'.
        * jcf-io.c (jcf_filbuf_from_stdio): Cast the result of `fread' to
        int when comparing against one.
        * jcf-parse.c: Include toplev.h.
        * jcf-write.c: Likewise.  Don't include <string.h> or <sys/stat.h>.
        (localvar_free): Remove unused variable `i'.
        (generate_bytecode_conditional): Likewise for variable `kind'.
        * jv-scan.c: Include config.h and system.h.  Remove redundant
        OS header and gansidecl.h includes.
        (warning): Add the `const' keyword to a char*.  Also add
        ATTRIBUTE_PRINTF_1 to the prototype.  Check ANSI_PROTOTYPES, not
        __STDC__, when determining whether to use ANSI-isms.
        (fatal): Likewise.  Also add ATTRIBUTE_UNUSED.
        (xmalloc): Don't redundantly prototype here.
        (main): Remove unused parameter `envp'.  Also fix the arguments
        passed to function `fatal' to match the format specifier.
        * lang.c (java_tree_code_name): Add the `const' keyword to a char*.
        * mangle.c: Include toplev.h.
        (emit_unicode_mangled_name): Declare parameter `len'.
        * parse.y (parse_warning_context): Add the `const' keyword to a
        char*.  Also add ATTRIBUTE_PRINTF_2 to the prototype.  Check
        `ANSI_PROTOTYPES' not `__STDC__' for whether to use ANSI-isms.
        (issue_warning_error_from_context): Add the `const' keyword to
        a char*.
        (parse_error_context): Likewise.  Also check `ANSI_PROTOTYPES'
        not `__STDC__' for whether to use ANSI-isms.
        * typeck.c (incomplete_type_error): Mark parameters `value' and
        `type' with ATTRIBUTE_UNUSED.
        (parse_signature_type): Use ISDIGIT, not isdigit.
        * verify.c (check_pending_block): Add the `const' keyword to a char*.
        (verify_jvm_instructions): Likewise.  Remove unused variables
        `field_name' and `default_val'.
        * zextract.c: Include config.h and system.h.  Remove redundant
        OS header includes.
        * zipfile.h: Prototype `read_zip_archive'.

From-SVN: r24835