Conflicts:
	src/mod/endpoints/mod_media_gateway/mod_media_gateway.h

  1) parse incoming MODIFY request for ITO package ,
  2) starting timer based on MGC requested time
  3) on expiry generate Inactivity Notify to MGC

Conflicts:
	.gitignore
	conf/insideout/autoload_configs/modules.conf.xml
	conf/vanilla/autoload_configs/modules.conf.xml
	src/mod/endpoints/mod_sofia/mod_sofia.h
	src/switch_rtp.c

   1) build NOTIFY command and send to MGC
   2) CLI command to send DTMF NOTIFY Megaco command to MGC

Conflicts:
	src/mod/endpoints/mod_media_gateway/media_gateway.c

Pre-fill values for rtp terms (local address + reserved rtp port). Add functions to pick rtp term ids, add a memory pool in the termination struct.

adding add/mod/sub api and alloc context during add and release context while processing subtract code