1999-09-01 Akim Demaille <akim@epita.fr>

1999-09-01  Akim Demaille  <akim@epita.fr>

	* acgeneral.m4 (AC_ACVERSION): Bump to 2.14.1 to differenciate the
	experimental branch from the main trunk.

	* acgeneral.m4 (AC_FOREACH_COMMA): New macro, to perform m4 loops
 	on m4 lists (i.e., list='(item_1, item_2, ..., item_n)').
	(AC_FOREACH): New macro, to perform m4 loops on shell lists (i.e.,
 	list='item_1 item_2 ... item_n').

	* acgeneral.m4 (AC_DEFUN): Now accept two other optionnal
 	parameters: the name of the macro which is specialized here, and
 	the name of the first argument.  For instance `AC_CHECK_FNMATCH'
 	should be declared as specializing `AC_CHECK_FUNC' for `fnmatch'
 	as first argument.

	* acgeneral.m4 (AC_CHECK_FILES): Use AC_FOREACH for looping,
 	instead of the shell's loop.

	* acgeneral.m4 (AC_TR): In addition to transliteration, provide a
 	mean to specify the valid destination alphabet and a default
 	character for aliens characters.  This is in order to remove
	characters such as `+:-' etc. that may appear in file names,
	but are not valid for shell variables or #defines.
	(AC_TR_DEFINE): New macro, maps anything to a valid uppercase
 	#define rhs.
	(AC_TR_UPCASE_NAME): Replaced by AC_TR_DEFINE.  All callers
 	changed.
	(AC_TR_UPCASE_FILE): Likewise.

	* acgeneral.m4 (AC_TR_SH): Don't use the generic AC_TR: there is a
 	difficult problem of quoting between m4 and sh.  Use the variable
 	$ac_tr_sh to work around this difficulty.
	(AC_VAR_TEST_SET): New macro, which tests if a variable is set.
	(AC_VAR_IF_SET): New `ifelse' macro.
	(AC_CACHE_VAL): Use AC_VAR_IF_SET.
	(AC_INIT_NOTICE): Define $ac_tr_sh.

	* acgeneral.m4 (AC_CHECK_FILE): Converted to use AC_TR and AC_VAR
 	families.

	* acgeneral.m4: Fixed the regular expressions: `$' shall not be
	portably in a sed \(\) group.