This rather small ;-) commit merges the changes from my team branch 0.3.0 into t

This rather small ;-) commit merges the changes from my team branch 0.3.0 into t
he 1.2 branch.

These changes include the new mISDN mqueue interface which makes it possible to
compile chan_misdn against the current cvs version of mISDN/mISDNuser.

These changes also contain various additions and numerous bugfixes to chan_misdn
.

Each change is documented in the commit logs in the team/crichter/0.3.0 branch.

git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.2@40306 65c4cc65-6c06-0410-ace0-fbb531ad65f3