build: autoconf: update.

* submodules/autoconf: Update.
There are no changes in data/m4sugar/foreach.m4, and the
changes in data/m4sugar/m4sugar.m4 are minor.
This commit is contained in:
Akim Demaille
2012-04-10 20:49:47 +02:00
parent d834eca014
commit 3d05bae83a