pidgin/purple-plugin-pack

ee710a16e631
we don't need to include the m4 directory in the build directly anymore...
[DiffTopic]
type=default
depends=pidgin
provides=difftopic
summary=Show the old topic when the topic in a chat room changes.
description=%(summary)s
authors=Sadrul Habib Chowdhury
introduced=1.0beta4