logical organization.

Merge pull request #351 in FS/freeswitch from ~DRAGOS_OANCEA/freeswitch-dragos:rtcp_loss_fraction_codec_control-fix to master

* commit '18b47b8e':
  FS-7844: packet loss fraction fix when calculating loss average

* commit '8068c4e1':
  FS-7731 mod_xml_cdr: url_index global pointer concurrent access fix, curl default connection timeout fix

FS-7731 mod_xml_cdr: url_index global pointer concurrent access fix, curl default connection timeout fix

- thread variable copy of url_index global pointer to prevent the concurrent access having wrong state change if the posting to the current http server was unsuccessfull;
- overriding the default curl connection timeout

Based on need to figure out the smallest block of code need to mutex, and that libcurl (and its wrapper) is definitely thread safe.

* commit 'a1fe44a8':
  FS-7495 Add systemd unit configuration file for CentOS 7

* commit 'bdfb8363':
  FS-7130 make /run/freeswitch persistent, so it will start under systemd

Merge pull request #294 in FS/freeswitch from ~NIMAST/freeswitch-fs-7549:feature/ladspa_stop_api to master

* commit '4c5125b5':
  FS-7549 #resolve Added an API for removing an active ladspa effect on a channel. For conformance reasons, the uuid_ladspa command now accepts 'stop' and 'start', while the previous functionality (without any verb) which will simply add ladspa remains intact.

* commit '0b215827':
  fixed apr1 unresolved symbols in libfreeswitch.so.1.0.0

Added an API for removing an active ladspa effect on a channel. For conformance reasons, the uuid_ladspa command now accepts 'stop' and 'start', while the previous functionality (without any verb) which will simply add ladspa remains intact.

Merge pull request #349 in FS/freeswitch from ~THEHUNMONKGROUP/freeswitch-fs-7813-2:master to master

* commit 'c49f8731':
  Add vmute member flag to mod_conference.

A 'vmute' flag can be applied to individual conferees when entering the
conference. When the flag is passed, conferees will enter the conference
with their video muted.

FS-7813 #resolve

allow groups to show up in layer list, add delay for new layers to change canvases to give it time to auto adust in group situations

* commit 'af9310ce':
  add channel variable odbc-cdr-ignore-leg to ignore per leg

Merge pull request #346 in FS/freeswitch from ~DRAGOS_OANCEA/freeswitch-dragos:opus-sprop-stereo to master

* commit '37dc3929':
  FS-7829: mod_opus: add sprop-stereo fmtp param (just read it)

* commit 'dc6d7c32':
  FS-7830: mod_opus: added use-dtx param in config file (enables DTX on the encoder, announces in fmtp)

Merge pull request #348 in FS/freeswitch from ~DRAGOS_OANCEA/freeswitch-dragos:opus-cleanup-bugfix-asymmetric-fmtp to master

* commit '65135c5f':
  FS-7832: fixes when comparing local and remote fmtp params

restore patches from revert, this is lame, you need to bootstrap to fix it.  625^H^H^H0 days without having to rebootstrap

FS-7830: mod_opus: added use-dtx param in config file (enables DTX on the encoder, announces in fmtp)

mod_conference new features:
add conference layout "1x1+2x1" and add to layout group grid
add conference flag video-bridge-first-two conference flag
add conference flag video-required-for-canvas to only use avatars for members with video
add conference flag video-muxing-personal-canvas
add conf_verto_ prefix for variables to pass on live array subscription notice
add api command conference foo vid-canvas <member_id|all|last|non_moderator> [<newval>]
add api command conference foo vid-layer <member_id|all|last|non_moderator> [<newval>]
add api command conference foo vid-watching-canvas <member_id|all|last|non_moderator> [<newval>]
changed api command conference foo vid-layout, args are now "<layout name>|group <group name> [<canvas_id>]"
add channel vars you can set before entering conference video_initial_canvas and video_initial_watching_canvas
add many new output status vars to conference list api
add new conference member flag "second-screen"
add config param video-canvas-count
add config param video-super-canvas-label-layers
add config param video-super-canvas-show-all-layers
add config param video-super-canvas-bgcolor

verto client:
add google login
add hipchat js file
conf_verto_hipchatURL= to control what hipchat server appears if any
global device init and overrides
allow passing sessid
add confMan.canvasCount
add handling of multiple canvases and launching them, and controlling all of their layouts
re-layout moderator controls and add support for changing the watching and input canvas and layers
when launching another canvas, watch subscriptions for the original call so we can automatically close the additional window
maintain camera settings on call recovery

* commit 'c797e948':
  FS-7824 Add functionality for capturing screenshots from both legs to uuid_write_png

With this patch, uuid_write_png is able to capture screenshots from both
legs of a bridged video call. It still expects a uuid and filename for
the first two arguments. If given a third argument, it must be concat
or split. If concat is specified, screenshots from both ends are taken
and written side by side to the given filename. If one image is shorter
than the other then it is padded with black and vertically centered. If
the third argument is split then the two screenshots are written to
separate files. In this case, a second filename is expected as a fourth
argument.

FS-7820 updated switch_event.c to have benchmark framework, and updated .gitignore file to ignore binary test files

 and docs

Merge pull request #319 in FS/freeswitch from ~LAZEDO/freeswitch:feature/aditional_sofia_events to master

* commit '58043483':
  FS-7773 [mod_sofia] transfer events #resolve

C level unit testing and micro benchmarking framework, including one
example unit test.