[FYI] Merge branch 'maint' into master

[Stefano Lattarini]

commit 27478539b094a2b0bee4f8a452bec552edcabdbe
Merge: b4b6a1a 78900b9
Author: Stefano Lattarini <stefano.lattar...@gmail.com>
Date:   Thu Jun 28 10:59:45 2012 +0200

    Merge branch 'maint'

    * maint:
      coverage: tests AM_MISSING_PROG usage
      docs: document AM_MISSING_PROG

    Signed-off-by: Stefano Lattarini <stefano.lattar...@gmail.com>