pidgin/purple-plugin-pack

Re-add purple2 compatibility with #if PURPLE_VERSION_CHECK(3,0,0) blocks

Based on previous commits between 2.7.0 and now, this is sorta like reverting
those changes partially.
[SSL Info]
type=default
depends=purple
provides=sslinfo
summary=Displays info about your currently loaded SSL plugin
description=%(summary)s
authors=Gary Kramlich
introduced=1.0beta1