1999-02-22 Stu Grossman <grossman@cygnus.com>

1999-02-22  Stu Grossman  <grossman@cygnus.com>
	* acgeneral.m4 (AC_CANONICAL_SYSTEM): Explicitly require
	AC_CANONICAL_HOST, AC_CANONICAL_TARGET and AC_CONICAL_BUILD.
	(AC_CONFIG_AUX_DIR): Run auxillary shell scripts through $SHELL.
	Do not rely on their magic number.
	(AC_CANONICAL_THING): New macro. Cache results.
	(AC_CANONICAL_HOST): Reimplement; use AC_CANONICAL_THING.
	(AC_CANONICAL_TARGET): Likewise.
	(AC_CANONICAL_BUILD): Likewise.
	(AC_OUTPUT): Use $SHELL.
	(AC_OUTPUT_SUBDIRS): Likewise.