[JM-761] [JM-769] Major reworking of gateway code.  Built from the ground up.  Still some functionality to go.  Wouldn't recommend attempting to use this yet.

git-svn-id: http://svn.igniterealtime.org/svn/repos/wildfire/trunk@4505 b35dd754-fafc-0310-a699-88a17e54d16e