Fixes issue 2629.
Have opus codec implementation fixes timestamp given by remote.

git-svn-id: http://csipsimple.googlecode.com/svn/trunk/CSipSimple@2374 9f815046-5998-e9c0-b7e2-ac03a23edfa4
Fixes issue 2629.
Patch pjsip to send modified (adjust) timestamp in case of opus.

git-svn-id: http://csipsimple.googlecode.com/svn/trunk/CSipSimple@2375 9f815046-5998-e9c0-b7e2-ac03a23edfa4