removed the reloading of the ntdebug stuff, since this is a bit buggy, we only...

removed the reloading of the ntdebug stuff, since this is a bit buggy, we only set it when loading chan_misdn for now. fixed a litle state problem when receiving RELEASE_COMPLETE. also we may only play tones to a NT when the extension does not match and such cases.

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@36941 65c4cc65-6c06-0410-ace0-fbb531ad65f3