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.

Revert the build change to freetdm since it broke the build of that
modules on CentOS. Once a working change is finished, then it'll be
committed against FS-7122.

FS-7142 #resolve

Merge pull request #146 in FS/freeswitch from ~DDRAGIC/freeswitch:bugfix/FS-7121-switch_events_match-matches-any-substring to master

* commit '1c16d5d8':
  FS-7121 change switch_events_match() to use strcmp

Merge pull request #147 in FS/freeswitch from ~DDRAGIC/freeswitch:feature/FS-7128-fs_cli-ignore-duplicate-lines to master

* commit '2406abdb':
  FS-7128 fs_cli: ignore duplicate lines in history

Merge pull request #148 in FS/freeswitch from ~DDRAGIC/freeswitch:feature/FS-7129-fs_cli-function-keys-toggle-functionality to master

* commit '959b07c0':
  FS-7129 fs_cli: add toggle mode to function keys

* commit '85b8631d':
  Add conference member data to floor event

originate takes care of new thread on outgoging calls, extra thread_launch causes race

* commit 'ece5cd52':
  FS-7088 #resolve Set flag to enable core dump from non-root users.

FS-6688: #resolve fix resubscribe through proxy with record route when the resub does not have a record route and the route has uri params

Merge pull request #157 in FS/freeswitch from bugfix/FS-7122-several-libs-do-not-have-the-subdirs to master

* commit '16f7177c':
  resolve an automake warning about subdirs on latest automake

The file 'libs/sofia-sip/s2check/exit77.c' was moved in order to
silence the warning and to keep the build working. There might be a
build problem that results from this file move, but after serveral
build tests I have not found one. The contents of the file are
specifically for the make check target, so I believe it would be
highly unlikely to cause problems with any production feature.

FS-7122 #resolve

Merge pull request #155 in FS/freeswitch from bugfix/FS-7122-several-libs-do-not-have-the-subdirs to master

* commit '51f2442a':
  resolve an automake warning about subdirs on latest automake