pidgin/purple-plugin-pack

updated the pkg-config macros to use libpurple-3 and pidgin-3
[Ignorance]
type=incomplete
depends=pidgin
provides=ignorance
summary=Allows management of users with various levels of activity
description=%(summary)s
authors=Levi Bard
introduced=1.0beta7
notes=Needs some TLC. It builds and probably works, but is far from an acceptible state.