FS-5155
freetdm: - Added ftdm_usage command to check if a channel has calls (ie, is busy)
         - Refactored ftdm CLI management to allow standalone APIs to be registered
         - Minor logging changes here and there
update changelog  Thanks to Niek Vlessert for assisting with this
Build mod_curl against system libraries
Build mod_memcache against system libraries
Build mod_spandsp against system libraries
Build mod_flite against system libraries
Build mod_speex against system libraries
Build mod_event_zmq against system libraries
Build mod_shout against system libraries
Build mod_sndfile against system libraries
Build mod_lua against system libraries
Fix missing symbols in mod_hash
Fix missing symbols in mod_bv
Fix missing symbols in mod_codec2
Fix missing symbols in mod_ilbc
Move freeswitch.xml.fsxml to run_dir
Update libcurl.m4
Build freeswitch core against system libraries
Use Indian numbering system in mod_say_en