The mod_conference API supports passing an optional third arg for all
mute commands (mute, unmute, tmute, vmute, unvmute, tvmute). This patch
adds support for the optional third arg to the JSON API.

FS-7882 #resolve

* commit 'adb5f0d2':
  FS-7130 make /run/freeswitch persistent, so it will start under systemd

FS-7654 regression on eavesdropping on channels playing a file because of channel count of 0 on write frame from stream_file

FS-7869: [mod_conference] fix deadlock on shutdown after playing video file that will not display video

Merge pull request #355 in FS/freeswitch from ~DRAGOS_OANCEA/freeswitch-dragos:opus-encode-repacketize to master

* commit '566a1491':
  FS-7848 : mod_opus: Add ptimes: 80 ms, 100 ms, 120 ms (Opus repacketize)

Revert "FS-7130 make /run/freeswitch persistent, so it will start under systemd"

This reverts commit bdfb8363.

* commit 'f67b6d1c':
  FS-7789 [mod_av] Fixed issue with audio dropping out partway through recordings

* commit 'bb75a34f':
  Restoring commit lost in mod_conference refactor.

Commit c49f8731, which added a vmute
option to the conference member flags, was somehow lost in the
mod_conference refactor. This commit restores the lost code.

FS-7813 #resolve

* commit '99f5234f':
  FS-7854 Add task_runtime to tasks table in core database

This patch adds the task_runtime column to the tasks table in the core
database. The BIGINT type is used for this column because a 64-bit integer
is used to store task runtimes within the scheduler.

This fixes an issue with mod_av where audio was not included for the entire
duration of a recording initiated by something other than the record_av app.

FS-7847: [mod_conference] add layers that do not match the aspect ration of conference by using the new hscale layer param for horizontal scale, and add zoom=true param to crop layer instead of letterbox, add grid-zoom layout group that demonstrates these layouts

FS-7846: [mod_dptools] add eavesdrop_whisper_aleg=true and eavesdrop_whisper_bleg=true channel variables to allow you to start eavesdrop in whisper mode of specific call leg

* commit '59d1bdae':
  FS-7845 whitespace and indention
  FS-7845 File rename to remove mod_* prefix to local module C files. Change function name prefixes from shorthand 'conf' to longer form 'conference'. Also fixes the channel variable names which had been caught in an over zealous perl -pi -e command...
  FS-7845 Rename functions so that they relate to the file that they are located in.
  FS-7845 Refactor of mod_conference to improve compilation speed, and logical organization.

function name prefixes from shorthand 'conf' to longer form
'conference'. Also fixes the channel variable names which had been
caught in an over zealous perl -pi -e command...

located in.