FS-5773 --resolve mod_ssml: allow rendering of documents if TTS is not configured
FS-5819: configure fix for new clang detection
FS-5861 regression typo
Merge branch 'v1.2.stable' of git://git.freeswitch.org/freeswitch into v1.2.stable
Merge branch 'v1.2.stable' into stable-session-api