[JM-761] [JM-769] Base code put together, not entirely functional yet.  Start of OSCAR and Yahoo protocol pieces.  Do not use yet.

git-svn-id: http://svn.igniterealtime.org/svn/repos/wildfire/trunk/src/plugins/gateway@4344 b35dd754-fafc-0310-a699-88a17e54d16e