configure.ac: honor NetBSD and SmartOS in search for system lua
src/switch_utf8.c: remove switch_u8_vprintf and switch_u8_printf
replace u_int32_t with C99 standard uint32_t, and also the same for
  8,16,64 bit

FS-8143 #resolve #comment [mod_rayo] Fix crash caused by client disconnecting from mod_rayo while a message is being delivered to that client.
This is caused by the XMPP context's JID -> XMPP stream mapping not being cleaned up on XMPP stream destruction.

Merge pull request #410 in FS/freeswitch from ~JMESQUITA/freeswitch:bugfix/FS-7997-add-number-as-mouse-over-names to master

* commit '2d14aa93':
  FS-7997 #resolve We need to have a designer look at the html partial and come up with a CSS to make this better looking.

Merge pull request #468 in FS/freeswitch from ~NCOPA/freeswitch:bugfix/FS-1772-need-a-way-for-individual-end-users to master

* commit '367dabcb':
  FS-1772 #resolve fix reset of voicemail greeting to default

Merge pull request #470 in FS/freeswitch from ~NCOPA/freeswitch:bugfix/FS-8131-voicemail-does-not-reject-change to master

* commit '7aba5d52':
  FS-8131: [mod_voicemail] fix disallowed empty password set

Merge pull request #214 in FS/freeswitch from ~ARTURZ/freeswitch:FS-7344-ack-invite-3pcc-race to master

* commit '8ea99bfc':
  FS-7344: Fix race condition for INVITE right after ACK in 3PCC mode.

FS-8144 readability and code formatting cleanup of mod_opus whiel reviewing PLC/FEC bug and document missing options from opus.conf.xml

Merge pull request #473 in FS/freeswitch from ~ARTURZ/freeswitch:FS-8140-username-typo-in-sofia_handle_sip_i_invite to master

* commit '7e2082a5':
  FS-8140 Fix user_name typo in sofia_handle_sip_i_invite

Merge pull request #243 in FS/freeswitch from ~ARTURZ/freeswitch:FS-7486-broken-sofia-request-queue to master

* commit '074b07f5':
  FS-7486: Fix handling of queued requests in Sofia-SIP

Merge pull request #475 in FS/freeswitch from ~ARTURZ/freeswitch:FS-8142-switch_core_session-thread-cache-races to master

* commit 'cd4c3188':
  FS-8142 Fix a thread cache thread-safety and caching

Merge pull request #474 in FS/freeswitch from ~ARTURZ/freeswitch:FS-8141-add-apr_queue_term to master

* commit '9e29ea01':
  FS-8141 Add support for apr_queue_term() to switch_apr.c

FS-7697 chown the /etc/freeswitch/tls directory so that the freeswitch user can have read/write for TLS certificate generation

Prevent users to change password to an empty password when
allow-empty-password-auth is set to true.