control flows. Basically, there was a small bug where I forgot to listen
for an OK, which caused transactions to stick around too long and fuck
everything up. That was quickly fixed, but my compulsion required me to
reorganize the code to avoid such errors in the future. I implemented
another new feature as well, we now respond with a 480 Temporarily
Unavailable message (rather than cancel) when canceling an INCOMING call.
The prior behavior was incorrect.
git-svn-id: http://wush.net/svn/range/software/public/openbts/trunk@3264 19bc5d8c-e614-43d4-8b26-e1612bc8e597