Without the value for source fraction, applications relying on RTCP events for making changes to FS behaviour or even for logging get false information.

With this change the value for source fraction is passed along in RTCP events correctly.

To my current understanding, as the value for fraction in the RTCP packet is represented by 8 bits according to the spec, calling `ntohl` on it will always zero it out. Fixed by removing the call.

FS-7203 #resolve

on debian 7, ws_raw_read returns 0 when client side disconnect the socket,
no HUP is detected and it resulted in an infinite loop.

FS-7191 #resolve #comment edit pgsql example connection string to remove unneeded option that may cause a failure on some systems.

* commit '01dcb74f':
  FS-7187 add switch_cache_db_create_schema() to test for SCF_AUTO_SCHEMAS flag

FS-7174: #resolve #comment make sure not to leave any sessions readlocked in bridge_early_media=true in case one in the middle of the list is abandoned

FS-7180: when using system lua, properly link against renamed library versions on debian for esl luamod

FS-7180: when using system lua, properly link against reanmed library versions on debian for mod_lua

FS-7180: add --enable-sytem-lua configure arg to allow building mod_lua against system lua and allow mod_lua to build against lua 5.1 or 5.2

FS-7180: add --enable-sytem-lua configure arg to allow building mod_lua against system lua and allow mod_lua to build against lua 5.1 or 5.2

* commit '5c5b9fcd':
  If available, use libjpeg-turbo in Debian build dependencies

Debian is transitioning to libjepg-turbo in Jessie.

See the libjpeg-turbo transition plan for details:
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=754988

FS-7151 #resolve

* commit '378d3505':
  FS-7004 mod_sndfile: use correct permissions to create new files

libsndfile's sf_open() function doesn't allow to pass file permissions. To fix
this, new files are created with the correct mode before passing them to
libsndfile.

FS-7150 #resolve #comment [mod_rayo] added param add-variables-to-events which will add channel variables to <offer>, <ringing>, <answered>, and <end> if set to true.  Default is false.