A great big renaming patch

This patch renames the bridging* files to bridge*. This may seem pedantic
and silly, but it fits better in line with current Asterisk naming conventions:
* channel is not "channeling"
* monitor is not "monitoring"
etc.

A bridge is an object. It is a first class citizen in Asterisk. "Bridging" is
the act of using a bridge on a set of channels - and the API that fulfills that
role is more than just the action.

(closes issue ASTERISK-22130)


git-svn-id: http://svn.asterisk.org/svn/asterisk/trunk@395378 f38db490-d61c-443f-a65b-d21fe96a405b
Fix incorrect reference to stasis/bridging.h

git-svn-id: http://svn.asterisk.org/svn/asterisk/trunk@395381 f38db490-d61c-443f-a65b-d21fe96a405b