Merge pull request #1800 in FS/freeswitch from bugfix/FS-12001-mod_callcenter-can-t-use-mod_mariadb-with-mysql-due-to-keyword-on-table-schema to master

* commit '71b0ab24':
  FS-12001: [mod_callcenter] Workaround issues with renaming tables and columns in SQLite version prior to 2019-02-07 (3.27.0).

FS-12001: [mod_callcenter] Workaround issues with renaming tables and columns in SQLite version prior to 2019-02-07 (3.27.0).

* commit 'f93445a3':
  FS-12010: [sofia-sip] Fix improper cleanup on su_deinit().

* commit '797216fc':
  FS-12008: special case G722 - fix rate passed to switch_core_codec_init()

Merge pull request #1797 in FS/freeswitch from bugfix/FS-11981-freeswitch-crash-any-time-in-switch_timer.c-when-high-throughput to master

* commit '48b8fa58':
  FS-11981: [Core] Fix FreeSWITCH crash when timerfd is initialized with an error.

Merge pull request #1795 in FS/freeswitch from ~FERNANDOJDK/freeswitch:bugfix/FS-12001-mod_callcenter-can-t-use-mod_mariadb-with-mysql-due-to-keyword-on-table-schema to master

* commit 'd3487dcc':
  FS-12001: [mod_callcenter] Renamed column name from 'system' to 'instance_id' to make mod_callcenter work with MySQL through mod_mariadb

FS-12001: [mod_callcenter] Renamed column name from 'system' to 'instance_id' to make mod_callcenter work with MySQL through mod_mariadb

- allow for a spaces between "info=" and opening '<'
- extract URI from inside "<>" but allow empty - let the higher level app decide what to do about it
- replace strndup (does not exist on Windows) with memcpy

Merge pull request #1792 in FS/freeswitch from bugfix/FS-11998-fix-improper-json_api-module-unload to master

* commit '822c0b07':
  FS-11998: [Core] Fix improper json_api module unload

Merge pull request #1791 in FS/freeswitch from bugfix/FS-11991-mod_mariadb-err-when-start-freeswitch to master

* commit '9520f8e1':
  FS-11991: [Core] Fix bug in the database module interface preventing tables from being created when no drop_sql

FS-11991: [Core] Fix bug in the database module interface preventing tables from being created when no drop_sql

Merge pull request #1790 in FS/freeswitch from bugfix/FS-11989-regression-when-using-mod_mariadb-and-lua-mod_nibblebill to master

* commit 'f74036cd':
  FS-11989: [Core] Fix database module interface not returning statuses of some operations.

* commit '88448ebf':
  FS-11982 [mod_kazoo] add expand-headers-on-fetch

Merge pull request #1784 in FS/freeswitch from ~INFOMIND/freeswitch:feature/FS-11977-mod_signalwire-add-configuration-param-override-context to master

* commit '263a83bf':
  FS-11977 [mod_signalwire] add configuration param override-context

* commit '4f66959e':
  FS-11973: [mod_event_multicast] add mutex and checks on hash ptrs on shutdown

Merge pull request #1779 in FS/freeswitch from ~DRAGOS_OANCEA/freeswitch-dragos:FS-11967-rate to master

* commit '6fb03960':
  FS-11967: add mod_opus to unit test XML
  FS-11967: add unit test for switch_core_codec_copy()
  FS-11967: [core] fix rate of recording for Opus

Merge pull request #1781 in FS/freeswitch from ~DRAGOS_OANCEA/freeswitch-dragos:FS-11919-log to master

* commit '6cfceb6e':
  FS-11919: change back loglevel to DEBUG1

* commit '689a3768':
  FS-11972: [Build-System] Add Raspberry Pi support.