Merge pull request #816 in FS/freeswitch from ~FLOKR/freeswitch:feature/FS-9079-adding-new-strategy-to-mod_callcenter to master

* commit '8b42c77c':
  FS-9079: [mod_callcenter] Add ring-progressively strategy

A new strategy is now available through mod_callcenter, which aim
is to provide a mix between top-down and ring-all strategies.

If set to ring-progressively, the strategy will call an agent, and
then a second agent, and then a third agent, without cancelling
previous calls.

The delay between each call is 10 sec by default, but it can be
changed using the queue variable ring-progressively-delay.

Merge pull request #691 in FS/freeswitch from ~RAJESH.VAYA/freeswitch:feature/mod_callcenter-json-api to master

* commit '23e53df7':
  FS-8799 [mod_callcenter] Add JSON API interface for mod_callcenter

Merge pull request #829 in FS/freeswitch from ~PIOTRGREGOR/freeswitch:bugfix/FS-9117-avmd-build-fails-on-windows to master

* commit 'f476e23c':
  FS-9117 [avmd] #fix build on Windows

Merge in Ubuntu Packaging changes

* commit '7375ad9e':
  FS-9081 [Ubuntu Packaging] WIP Patches to build system and configure to allow FS to build on 14.04
  Revert "FS-9081 to build all modules for trusty needs the universe components"
  Revert "FS-9081 Correction to e8f83d05"

This reverts commit e8f83d05.

This reverts commit 1b9fda72.

Merge pull request #824 in FS/freeswitch from ~PIOTRGREGOR/freeswitch:feature/FS-9011-avmd-add-configuration-file to master

* commit 'bf140e9b':
  FS-9011 [avmd] Add XML config

This is a generated file that was added by commit:

    commit 77f52bb6
    "FS-7928 FS-7618 systemd and package build improvements"

We were missing mod_smpp; mod_json_cdr needed to be placed differently
in the file such that it matches the output of the automated generator
we use to check the completeness of this file.

Add XML configuration file.
Bind reloadxml callback.
Add safe parsers of user's input.
Add show/set/load/reload API commands.

FS-9086 #resolve [Video files playing in mod_conference do not count in totals for calculating layout]

Revert "FS-8704: Add min-members, wait-min-members-timeout, wait-mod-timeout, wait-min-members-timeout-message, wait-mod-timeout-message, endconf-mod-exit-message, and endconf-message parameters and functionality to mod_conference."

This reverts commit c39fbb29.

Merge pull request #825 in FS/freeswitch from ~SSINYAGIN/freeswitch:bugfix/FS-9075-debian-package-freeswitch-all-incompatible to master

* commit 'ce6af250':
  FS-9075 fixup for systemd and sysvinit