Merge pull request #222 in FS/freeswitch from feature/FS-7373-add-ability-to-specify-custom-source.list to master

* commit '4738da13':
  When using the debian/utils.sh script to build FreeSWITCH packages, add the ability to pass -T[path to custom sources path] and -K[custom keyfile path] options to build the FS packages with a custom sources and keyring path.

add the ability to pass -T[path to custom sources path] and -K[custom keyfile path]
options to build the FS packages with a custom sources and keyring path.

FS-7373

FS-7300 #resolve #comment [mod_rayo] handle all MRCP completion causes in SPEECH-COMPLETE event and validate / load input grammar URLs

* commit '7a6303d6':
  Add minimal configuration for configuring FreeSWITCH from scratch

The default "vanilla" configuration that comes with FreeSWITCH has
been designed as a showcase of the configurability of the myriad of
features that FreeSWITCH comes with out of the box. While it is very
helpful in tinkering with FreeSWITCH, it has a lot of extraneous stuff
enabled/configured for use in a production system. This configuration
aims to take the reverse stance -- it attempts to be a starting point
for configuring a new system by "adding" required features (instead of
removing them as one would do if one starts with the default
configuration).

Jira: FS-7362
Source: https://github.com/mx4492/freeswitch-minimal-conf/commit/270941d6f2dca279f1bb8762d072940273d5ae11

FS-7355: don't do the checks for rpl_realloc and rpl_malloc unless it is gcc compiling as autoconf checks for these don't work quite right on clang

* commit '669d6137':
  FS7750: When using the api command group, there is no way to return the contact list separated by :_:, which is required to group call extensions that have been multiply-registered.

Merge pull request #219 in FS/freeswitch from ~SAFAROV/freeswitch-mod-radius-cdr_improvement:erlang-filter to master

* commit '57aba47f':
  FS-7354: Filter feature ported from mod_event_socket to mod_erlang_event

Merge pull request #216 in FS/freeswitch from ~MANAV/freeswitch:doc-switch_core_set_variable to master

* commit '830bc28c':
  FS-7352: Document how to use switch_core_set_variable to delete variables

I had to scan through the source of the function to verify that this
is the indeed the actual behaviour, and that NULL is a valid
argument. By mentioning this in the header, we save posterity that
effort.

FS7750: When using the api command group, there is no way to return the contact list separated by :_:, which is required to group call extensions that have been multiply-registered.

Merge pull request #170 in FS/freeswitch from ~NIMAST/freeswitch-fs-7203:rtcp-source-fraction-fix to master

* commit '5f7e111f':
  Fix source fraction always 0 in RTCP events

Merge pull request #206 in FS/freeswitch from ~ARTURZ/freeswitch:FS-7306-fs_encode-sleep-cleanup to master

* commit '921f7766':
  FS-7306: fs_encode is sleeping to much - cleanup

Merge pull request #213 in FS/freeswitch from ~MISHEHU/freeswitch:bugfix/FS-7340-mod_curl-json-api-change to master

* commit '5303101d':
  FS-7340: Converting the json handling to use the types and functions in switch_json.h .

FS-7340:  mod_curl: Missed a free.

FS-7340:  mod_curl:  Saved a few lines of code, added a check for successful allocation of cJSON structures.

Merge pull request #215 in FS/freeswitch from bugfix/FS-7342-fs-crash-induced-by-mod_conference to master

* commit 'b3cb89a1':
  FS-7342: regression from FS-7230 957c8fc9.  Don't destroy buffers we are currently using, only create them if they are not yet created

FS-7342: regression from FS-7230 957c8fc9.  Don't destroy buffers we are currently using, only create them if they are not yet created

* commit '66486713':
  FS-7273 Add support for build server to optionally specify revision when packaging RPM.         common.sh optionally accepts revision number and sets version in freeswitch-config-rayo.spec 	config-rayo.sh updated to be consistent with rpmbuilder.sh         rpmbuilder.sh optionally accepts revision number         src_tarball.sh will now produce freeswitch.spec and freeswitch-config-rayo.spec as artifacts.

* commit '38a35c26':
  FS-7339: create views basic_calls and detailed_calls after create table calls

* commit '849e90ba':
  destroy erlang session elements when the outbound erlang processis stopped/terminated

        common.sh optionally accepts revision number and sets version in freeswitch-config-rayo.spec
	config-rayo.sh updated to be consistent with rpmbuilder.sh
        rpmbuilder.sh optionally accepts revision number
        src_tarball.sh will now produce freeswitch.spec and freeswitch-config-rayo.spec as artifacts.

FS-6758 and other related behavior, also change to answer behavior to mimic what users tend to expect from cisco phones.

Updatd SKINNY on-hook action to hang up all calls on a device, except those in a short list of call states (or perform a blind transfer).
Added a hook after completing the hangup operation to start ringing if there is an inbound call active on the device.

Reorder received calls on skinny

FS-7323 #resolve #comment [mod_http_cache] added http_remove_cache <url> API call to manually expire a cached URL.
Added {refresh=true} parameter that can be prefixed to URL to force refresh when using http:// https:// file formats or the http_get API.
Examples:
    http_remove_cache http://phono.com/audio/troporocks.mp3
    http_get {refresh=true}http://phono.com/audio/troporocks.mp3
    <action application="playback" data="{refresh=true}http://phono.com/audio/troporocks.mp3"/>

Merge pull request #150 in FS/freeswitch from ~ITALOROSSI/freeswitch:FS-7126-fix_mod_translate_var_expansion_without_session to master

* commit 'e4f22c82':
  https://freeswitch.org/jira/browse/FS-7126 fix variable expansion in translate api when there is no session involved.

FS-7314 #resolve #comment try to fix openssl configure detection failure caused by broken commit upstream in openssl 1.0.2.  I don't have a box with this version of openssl so you'll need to let me know if this doesn't work