add var=val member lookup usable wherver member_id is valid in api commands
add bgimg to layouts with api command or config for global setting
fix bug with overlap layouts combined with odd sized layers
improve switch_img_fit to take a modifier for fit, streach or both at once

* commit 'f55ac436':
  FS-7677 handle packet loss
  FS-7519 FS-7677 trying to add H263 support FS-7519 FS-7677 fix key frame parsing and add some debug logs be verbose about invalid dimensions cleanup and refactor encoder params

* commit '1d7a4968':
  Allow JSON API commands to send third arg for muting

* commit 'ba9c44bb':
  FS-7885 Add getcputime command

FS-7519 FS-7677 fix key frame parsing and add some debug logs
be verbose about invalid dimensions
cleanup and refactor encoder params

FS-7889: [mod_conference] move conference chat to use an event channel so messages only go to the right 'room' for the conference

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