[mod_sofia] Update Polycom UA to recognize new Poly phones
We observed that the new Poly phones (formerly known as Polycom) were not getting sent a SIP UPDATE in certain circumstances (example: retrieving a parked call, and therefore, Caller ID would not show the parked caller). I renamed Polycom to Poly which will catch all Poly AND Polycom UA's. I also added Acrobits, and Ringotel to extend such functionality to those UA's. There were also other minor compatibility issues with the new Poly phones which have been resolved with tweaking the UA recognition on the code.
[mod_pgsql] err is now set correctly (dbh:last_error())
New function, `void pgsql_handle_set_error_if_not_set(switch_pgsql_handle_t *handle, char **err)` has been added to mod_pgsql module. This function is now called at several points where an error occurred but *err was not yet set.
[mod_timerfd] Fixed - continue timer loop after receiving a SIGSTOP
When taking a snapshot of a machine which pauses the process, mod_timerfd exits and FreeSWITCH, causing all channels to wait indefinitely.
Check `errno == EINTR` and continue the timer loop.
