move spidermonkey to use its own env for each instance instead of sharing one, should fix garbage collection tieups

FS-3724 2 ways to fix after updating to this version, 1) run set_zombie_exec in the dp; 2) use system_on_fax_success/system_on_fax_failure vars with explicit name of your command

add send_info dp app and uuid_send_info FSAPI and execute_on_sip_extra_headers and api_on_sip_extra_headers handler variables