skypiax: If you DO want to relay DTMFs out of band when bridged too, on top of audio DTMFs, set the channel variable 'skype_add_outband_dtmf_also_when_bridged=true'

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@16678 d0543943-73ff-0310-b7d9-9358b9ac24b2