resip/recon: avoid changing payload IDs in the default ConversationProfile

git-svn-id: https://svn.resiprocate.org/rep/resiprocate/main@11100 ddefafc4-47db-0310-ae44-fa13212b10f2
travis: revert from full dist-upgrade, just fetch subset of packages from sid without checking signatures

git-svn-id: https://svn.resiprocate.org/rep/resiprocate/main@11101 ddefafc4-47db-0310-ae44-fa13212b10f2
resip/recon: safety checks when using dynamic_cast with ConversationProfile

git-svn-id: https://svn.resiprocate.org/rep/resiprocate/main@11102 ddefafc4-47db-0310-ae44-fa13212b10f2
resip/recon: do not send DTMF as inband audio, can be troublesome as sipXtapi echoes it back to caller

git-svn-id: https://svn.resiprocate.org/rep/resiprocate/main@11103 ddefafc4-47db-0310-ae44-fa13212b10f2