warnings: add comments about previous patch
authorEric Blake <eblake@redhat.com>
Tue, 26 Jul 2011 21:55:05 +0000 (15:55 -0600)
committerEric Blake <eblake@redhat.com>
Tue, 26 Jul 2011 21:55:05 +0000 (15:55 -0600)
* m4/absolute-header.m4: Document AS_VAR_PUSHDEF limitation.
* m4/include_next.m4: Likewise.
* m4/warn-on-use.m4: Likewise.
* m4/warnings.m4: Likewise, and simplify use.
Suggested by Stefano Lattarini.

Signed-off-by: Eric Blake <eblake@redhat.com>

No differences found