Merge pull request #264 in FS/freeswitch from ~DRAGOS_OANCEA/freeswitch-dragos:mod_opus_fec_jb to master

* commit 'bd3589a2':
  FS-7436: added FEC support for mod_opus

You need an enabled jitter buffer for FEC to work.
If a packet is missing we look in the jitter buffer for the next one,
if the next packet is present we pass it to the decoder to extract
the FEC info from it. If there's no FEC inside the packet, the Opus decoder
will return PLC.

* commit '3df55b9b':
  Add sip_watched_headers variable to launch events when a SIP message contains a given SIP header

   Two new params added to autoload_configs/rayo.conf.xml
     offer-algorithm
       all: offer to all clients (default and old behavior)
       first: offer to first client, fails over to next client in list
       random: offer to random client, fails over to next random client

     offer-timeout-ms
       0: disable
       > 0 and < 120000: time to wait for reply from offer.  On timeout, next client is offered call.
                         If no other clients available, call is rejected.  5000 is default.

FS-6801 #resolve

Merge pull request #265 in FS/freeswitch from ~DRAGOS_OANCEA/freeswitch-dragos:codec2_fix_encoded_data_len to master

* commit '83923660':
  Fixed encoded_data_len for MODE 2400, it should be 6 bytes. Also replaced 2550 bps bitrate (obsoleted operation mode) by 2400

Fixed encoded_data_len for MODE 2400, it should be 6 bytes. Also replaced 2550 bps bitrate (obsoleted operation mode) by 2400

Merge pull request #99 in FS/freeswitch from ~BRIAN/freeswitch-brian:bugfix/FS-6961-mod_erlang_event-add-call-uuid-to to master

* commit '89f3f5e2':
  FS-6961: [mod_erlang_event]: Add call UUID to call_hangup message

Merge pull request #262 in FS/freeswitch from feature/FS-7587-add-ipv6-support-to-verto-websockets to master

* commit '3b2d00f3':
  FS-7587 Add ipv6 support to Verto / Websockets

* commit '8f343939':
  Added new options to nibble bill for minimum charges and rounding #FS-7560

* commit '441dd912':
  FS-7204, Allow to force a per-account send-message-query-on-register

* commit 'f135232e':
  FS-7196: add recording_follow_transfer support for semi attended transfers

These options are:

1) nibble_rounding: The number of decimal places to round the cost of the call to
2) nibble_minimum: The minimum charge to apply to a call

Rounding is applied before the minimum charging, and these steps only occur at call end to make sure they're accurate.

Checks for minimum_charge before call starts

"Billing done" flag to the data struct, and used that to exit early in the event processing during hangup has already occured.

* commit 'a4ef9d6b':
  FS-7405: if all is required don't pass if total ne pass

Merge pull request #232 in FS/freeswitch from ~ITALOROSSI/freeswitch:bugfix/FS-7242-delayed-bye-after-REFER to master

* commit 'beeea017':
  FS-7242 Waiting for state CS_PARK when receiving REFER.

* commit 'b4250c87':
  Fix switch_ivr_parse_event() to not hangup a session when there is no media yet

* commit 'f5e0a879':
  JIRA FS-7412. Added new LDAP schema (fsaccount.schema) with relevant attributes to match FS directory params and variables. Changed mod_xml_ldap code to reflect new schema. Updated xml_ldap.conf.xml as well to reflect mapping of new attributes.

FS-7593 --resolve  add locking keyed on device name around any database updates adding/removing the device

Ephemeral ECDH (ECDHE) was supported already. This patch adds Ephemeral
DH (DHE). To enable it, add DH parameters into the private-key file of
your server (agent.pem). For example via:
openssl dhparam -out dh.pem 2048

FS-7561 #resolve

FS-7513 add video-auto-floor-msec param to control how long a member must have the audio floor before also taking the video floor %NEEDS_DOC

little more tolerant of big timing errors between the symbols at the far end,
and as they are received by us.