* commit '4f66959e':
  FS-11973: [mod_event_multicast] add mutex and checks on hash ptrs on shutdown

Merge pull request #1779 in FS/freeswitch from ~DRAGOS_OANCEA/freeswitch-dragos:FS-11967-rate to master

* commit '6fb03960':
  FS-11967: add mod_opus to unit test XML
  FS-11967: add unit test for switch_core_codec_copy()
  FS-11967: [core] fix rate of recording for Opus

Merge pull request #1781 in FS/freeswitch from ~DRAGOS_OANCEA/freeswitch-dragos:FS-11919-log to master

* commit '6cfceb6e':
  FS-11919: change back loglevel to DEBUG1

* commit '689a3768':
  FS-11972: [Build-System] Add Raspberry Pi support.

Merge pull request #1776 in FS/freeswitch from bugfix/FS-11966-fix-regression-after-libsrtp-upgrade-to-2.2.0-resulting-in-no-audio to master

* commit '9b05fabd':
  FS-11966: [core] Fix regression after libsrtp upgrade to 2.2.0 resulting in no audio

Merge pull request #1774 in FS/freeswitch from ~DRAGOS_OANCEA/freeswitch-dragos:FS-11788-fix to master

* commit 'b1ba5461':
  FS-11788: JB: packet count on vbw too

* commit '7060d962':
  FS-11743: don't reset VBW on receiving PLI/FIR

* commit '4349da32':
  FS-11965: fix build.

* commit '9e006869':
  FS-11965: RTC: prevent overflow on percent_fraction (patch by Sergey Khripchenko <shripchenko@intermedia.net>)
  FS-11965: NACK log debug when we get a request
  FS-11965: RTCP: fix on rtcp_report_block->fraction - "if X packets were expected and X was lost, we want 0xff to be reported, not 0" (patch by Piotr Gregor <piotr@dataandsignal.com>)

(patch by Sergey Khripchenko <shripchenko@intermedia.net>)

FS-11965: RTCP: fix on rtcp_report_block->fraction - "if X packets were expected and X was lost, we want 0xff to be reported, not 0"
(patch by Piotr Gregor <piotr@dataandsignal.com>)

* commit '500b4c23':
  FS-11715: sanitize negative value for pkt_lost

* commit '30913564':
  FS-11964: add new chan var "rtp_video_nack_disable"

* commit 'f3d21a2d':
  FS-11788: JB: fix packets per video frame count and allow count on vbw