[1.0.X] Fixed #10867: make the makemessages command ignore files and only...

[1.0.X] Fixed #10867: make the makemessages command ignore files and only process directories. Thanks, diegobz. Backport of [10833] from trunk.

git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.0.X@10834 bcc190cf-cafb-0310-a4f2-bffc1f526a37