This adds the API command uuid_write_png to mod_png which takes a uuid and
file as input. This command takes a screenshot from the session associated
with the given uuid and writes it to the given file. If an absolute path
is not specified, the images directory is used as a prefix.

* commit 'b17564e8':
  FS-7705: mod_shout - dependency declaration added to SPEC file.

* commit '97394bd6':
  FS-7778 Fix ALTER TABLE statement to use single quotes.

Merge pull request #311 in FS/freeswitch from ~LAZEDO/freeswitch:feature/sms_delivery_report to master

* commit '05c476f9':
  FS-7764 #resolve

* commit 'eaf6430e':
  FS-7776 #resolve add mod_kazoo to build system

Merge pull request #331 in FS/freeswitch from ~CRIENZO/freeswitch:fs-7780-add-max-session-transfers to master

* commit '05cc8bb3':
  FS-7780 add new channel variable max_session_transfers.  If set, this variable is used to count the number of session transfers allowed instead of the max_forwards variable.  If not set, the existing behavior is preserved.

Merge pull request #327 in FS/freeswitch from ~DRAGOS_OANCEA/freeswitch-dragos:opus-keep-fec-on to master

* commit 'b3f453b0':
  FS-7772: mod_opus: add functionality to keep FEC enabled on the encoder by modifying the bitrate if packet loss changes (Opus codec specific behaviour).

Merge pull request #334 in FS/freeswitch from ~DRAGOS_OANCEA/freeswitch-dragos:opus-8khz-fix-init-ptime-40ms to master

* commit '12d24030':
  FS-7785: mod_opus: fix for invalid ptime 30 ms for opus@8000h . Replaced 30 ms with 40 ms.

* commit '97ed52cb':
  FS-7628: mod_erlang_event - removed unused var

FS-7772: mod_opus: add functionality to keep FEC enabled on the encoder by modifying the bitrate if packet loss changes (Opus codec specific behaviour).

Merge pull request #332 in FS/freeswitch from feature/FS-7783-play_and_get_digits-capture-invalid to master

* commit 'eed386bc':
  FS-7783 Add channel variable for capturing DTMF input when using play_and_get_digits when the response does not match

FS-7783 Add channel variable for capturing DTMF input when using play_and_get_digits when the response does not match

the number of session transfers allowed instead of the max_forwards variable.  If not set, the existing
behavior is preserved.

sofia_glue.c tries to issue an SQL "ALTER TABLE" statement to add the
ping_status column to sip_registrations, but fails because the default
is incorrectly quoted (double quotes vs single quotes).

* commit '97c25275':
  FS-7628: mod_erlang_event - added ipv6 support

Merge pull request #283 in FS/freeswitch from bugfix/FS-7572-broadcasting-multiple-wav-files-using to master

* commit '9049c004':
  FS-7572: add some events for file open/close/fail when using file_string

Merge pull request #274 in FS/freeswitch from bugfix/FS-7578-telephone-event-codec-clock-rate to master

* commit 'f35343a9':
  FS-7578: properly generate telephone-event in sdp for each rate of codec being offered

* commit 'd66839de':
  FS-7774 add mod_kazoo  #resolve

 #resolve

* commit '775ce5c0':
  Adding mod_smpp as an event_handler module.

FS-7730 #resolve

Merge pull request #318 in FS/freeswitch from ~LAZEDO/freeswitch:feature/silence_hits_exausted to master

* commit 'c4bd342b':
  FS-7771 #resolve

Merge pull request #315 in FS/freeswitch from ~LAZEDO/freeswitch:feature/xml_fetch_channels to master

* commit 'b2b9555d':
  FS-7760 #resolve

added xml fetch for channels to externally support nightmare transfer
depends on channel-xml-fetch-on-nightmare-transfer profile param (default is disabled)

* commit 'e12608bd':
  FS-7463 #resolve

freetdm: Declare __FTDM_FUNC__ macro and use it instead of __FUNCTION__ to deal with platform differences

OPENZAP-237 #resolve