freeswitch-stable: import 1.8.2 from master

freeswitch-stable: import 1.8.2 from master

This upgrades freeswitch from 1.6.20 to 1.8.2. All changes imported from
master. Notable changes:

  Modules:
    - v8 removed as too difficult to maintain
    - new modules: fail2ban, raven and video_filter

  Init and hotplug:
    - changed init config to uci (/etc/default/freeswitch replaced with
      /etc/config/freeswitch)
    - logging can now be enabled via /etc/config/freeswitch
    - hotplug script is now included in the main package
    - the post-install script no longer disables freeswitch during
      upgrades

  Fixes:
    - freeswitch now sends console output properly to procd

  Misc:
    - the new release adds support for MSRP (Message Session Relay
      Protocol, see
      https://en.wikipedia.org/wiki/Message_Session_Relay_Protocol), this
      opens TCP ports by default, can be limited to localhost in
      autoload_configs/msrp.conf.xml

Signed-off-by: Sebastian Kemper <sebastian_ml@gmx.net>