use less expensive time func in rtp stack
FS-4910 this too
don't seg if we forget voice
FS-4867: --resolve Prevent possible deadlock due to mutexes locked in opposite order between switch_ivr_dmachine_ping and switch_channel_queue_dtmf
FS-3882, FS-3546, FS-3712, FS-3970: --resolve Fixes the segfault in mod_rtmp where the channel was destroyed, but the endpoint still tried to send or receive data from the session.