FS-9287 Add channel variable to make spandsp_start_tone_detect easier to use from dialplan / embedded scripts.
The following variables are added:

execute_on_spandsp_tone_detect_<TONE NAME> : executes APP when tone is detected.  For example, if you have a tone
    named "SIT" defined in spandsp.conf.xml, the variable would be "execute_on_spandsp_tone_detect_SIT"

api_on_spandsp_tone_detect_<TONE NAME> : similar to execute_on except that it executes an API.

spandsp_tone_detect_stop_on_tone : default is false.  If true, detector will stop once the first matching tone is detected.

FS-9260: fix make detection to not fail on openbsed, and fix libtoolize detection to attempt to find libtoolize the same version as specified libtool

FS-9267 #resolve [Raw decoded image from vpx codec is corrupted by video media bugs that modify the image]

Merge pull request #865 in FS/freeswitch from ~MZAKA/freeswitch:feature/FS-9192-proxy-hold to master

* commit '05cc7708':
  FS-9192-proxy-hold: proxy hold when proxy media and proxy mode are disabled; its similiar to proxy-refer

FS-9192-proxy-hold: proxy hold when proxy media and proxy mode are disabled; its similiar to proxy-refer

Merge pull request #882 in FS/freeswitch from ~PIOTRGREGOR/freeswitch:bugfix/FS-9254-avmd-fix-warnings-in-windows-build-2 to master

* commit 'ee4c01b0':
  FS-9254: [avmd] fix windows build

Fix int-to-uint8_t conversion warnings
due to usage of switch_true when parsing config

Merge pull request #874 in FS/freeswitch from ~PIOTRGREGOR/freeswitch:feature/FS-9142-avmd-dynamic-settings-reopened to master

* commit '54d7c13a':
  FS-9142 [avmd] Dynamic settings

Merge pull request #879 in FS/freeswitch from ~DI-SHI/freeswitch:feature/FS-9238-update-for-osp-toolkit-4.11.3 to master

* commit 'dd869545':
  FS-9238: [mod_osp] Updated for OSP Toolkit 4.11.3.

Updated for OSP Toolkit API.
Updated sample configuration file.
Updated documentation.

FS-9219 #resolve [Re-INVITE with no SDP ] #comment use bypass_media_after_bridge_oldschool=true to enable back-compat bypass media after bridge

FS-7397: fix segfault due to memory corruption on using mod_translate app.  The session pool was being freed incorrectly after using the app instead of when the session pool was destroyed

* commit 'b9d31dc9':
  FS-9214: fix 3pcc behavior Fix callflow issues with  3pcc=true and 3pcc=proxy and interactions with sip_wait_for_aleg_ack removes passthrough of 183 on 3pcc=proxy (that was previously not functioning)

Fix callflow issues with  3pcc=true and 3pcc=proxy and interactions with sip_wait_for_aleg_ack
removes passthrough of 183 on 3pcc=proxy (that was previously not functioning)

* commit '79b214a1':
  FS-9235: Fix sending RTCP in switch_core_media

Add check of per session settings
in avmd_callback and init_avmd_session

Merge pull request #872 in FS/freeswitch from bugfix/FS-9136-freeswitch-sends-b-leg-sdp-different to master

* commit '50d7a80f':
  FS-9136: allow multiple instances of same video codec with different fmtp