Currently Xinha plugins call back to the server through multiple plugin
specific urls. This makes it difficult to integrate Xinha into environments
where url handling is captured and routed.
This development branch will use a single server side entry point for each
supported server side language.
going to use this branch to come up to speed; which means this version will
get documented and hacked to make it more newbie friendly. While I'm at it
I'll try to fix some bugs.