rtcp mapping and some other port mapping fixes

also codestyle fixes, parser fixes,
teardown handling and etc.
Fixed handling of ports param
rtcp mapping and some other port mapping fixes

also codestyle fixes, parser fixes,
teardown handling and etc.
Rewrite destination param instead of stripping it out (pass cdrouter test)
merge
Merge pull request #2 from Ri0n/master

rtcp port mapping and other fixes