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author	Joel E. Denny <jdenny@ces.clemson.edu>
	Sun, 5 Apr 2009 01:12:23 +0000 (21:12 -0400)
committer	Joel E. Denny <jdenny@ces.clemson.edu>
	Sun, 5 Apr 2009 01:12:23 +0000 (21:12 -0400)
commit	8ba62e3e10ae35a50dd4ae0cf4d87b3ffe00852c
tree	bb9cafd7b518196bf71db79b6d586d58850193d4	tree \| snapshot
parent	f490771b4bc4aaed04d2927c0fc8cfbe774fa701	commit \| diff

Replace BISON_PROG_GNU_M4 with Autoconf's AC_PROG_GNU_M4.

If the first m4 in $PATH is wrong, it keeps looking. Moreover, its
requirements for a correct m4 are stricter.
* m4/m4.m4: Replace with Autoconf 2.63's m4/m4.m4.
* configure.ac: Update to use AC_PROG_GNU_M4.
Reported by Eric Blake.

ChangeLog		diff \| blob \| blame \| history
configure.ac		diff \| blob \| blame \| history
m4/m4.m4		diff \| blob \| blame \| history

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