[FYI] Merge branch 'branch-1.13.2' into maint

[Stefano Lattarini]

commit 421f0ad97b4344e7ed35321850df1ae896ed7298
Merge: 90ec3fe 74be388
Author: Stefano Lattarini <stefano.lattar...@gmail.com>
Date:   Sat May 11 00:16:14 2013 +0200

    Merge branch 'branch-1.13.2' into maint

    * branch-1.13.2:
      warns: don't tell AM_PROG_MKDIR_P is going to be removed