When built-in components of Asterisk fail to start they cause the
Asterisk startup to abort.  In these cases only the most critical
cleanup should be performed - closing databases and terminating
proceses.  These cleanups are registered using ast_register_atexit, all
other cleanups should not be run during startup abort.

The main reason for this change is that these cleanup procedures are
untestable from the partially initialized states, if they fail it could
prevent us from ever running the critical cleanup with ast_run_atexits.

Create separate initialization for dns_core.c to be run unconditionally
during startup instead of being initialized by the first dns resolver to
be registered. This ensures that 'sched' is initialized before it can be
potentially used.

Replace ast_register_atexit with ast_register_cleanup in media_cache.c.
There is no reason for this cleanup to happen unconditionally.

Change-Id: Iecc2df98008b21509925ff16740bd5fa29527db3

In the script ./configure, AST_EXT_LIB_CHECK and AST_PKG_CONFIG_CHECK first test
whether parameter 1 was already found. Consequently, an if-test on PBX_ just a
line below is redundant, if exactly the same parameter 1 is used again.

No performance gain is expected by this change. However, because this strategy
is used all over in ./configure except for two places, this change aims to
create more consistency: Only do something different if there is a reason to do
so.

Change-Id: I4a6f48127b7af3a48168c917e888be1f70625027

The menuselect comment was updated to deprecate these modules but the
AST_MODULE_INFO block at the end of file was missed.

ASTERISK-27671

Change-Id: I63070b5c4d4f08af010c6034acd4793c1bcef839

Update patches included in bundled PJPROJECT for the new version.

ASTERISK-27730

Change-Id: Id3c8c8ad82126846bcd9768bc3d0a18d89be8944

Checking option_debug directly is incorrect as it ignores file/module
specific debug settings.  This system-wide change replaces nearly all
direct checks for option_debug with the DEBUG_ATLEAST macro.

Change-Id: Ic342d4799a945dbc40ac085ac142681094a4ebf0

Doing a 'make clean', 'make distclean', or 'make dist-clean' gets errors
about an invalid shell option: "/bin/sh: 0: Illegal option -".

The clean targets do not include the makeopts file which defines GREP and
LDCONFIG because the file may not exist and the distclean/dist-clean
targets will delete it anyway.

ASTERISK-27715

Change-Id: I33d40acdb03862bc89aeb6fb1ff497894a8ea7f5

ASTERISK-27554

Change-Id: If61c7faab7d2fa1031c056ed6268fe928e2391cf

Fixed wrong voicemail mailbox reference for Action: VoicemailUsersList.

ASTERISK-27703

Change-Id: Ie6578ad80bba2bfaf34b84f0be978f59045ce6cd

When HAVE_GETHOSTBYNAME_R_5 was set by the script ./configure, GCC 7.3.0 found
an unused variable. Actually, the variable was used (set to a dummy value) but
the compiler optimization might have removed that. Instead, this change ensures
that the variable 'res' is only used when it is really required.

Change-Id: Ic3ea23ccf84ac4bc2d501b514985b989030abab5

astosp.h is leftover from when logic was split between app_osplookup and
res_osp.  All logic was moved into app_osplookup by 109737eb in 2006,
but astosp.h remained.  This moves the remaining defines into
app_osplookup and deletes astosp.h.

Change-Id: I0a6c4debd7c9543b608520b1765abfa4fab7b2fd

The "ptime" SDP parameter received in a SIP response was not honoured.
Moreover, in the abscence of this "ptime" parameter, locally configured
framing was lost during response processing.

This patch systematically stores the framing information in the
ast_rtp_codecs structure, taking it from the response or from the
configuration as appropriate.

ASTERISK-27674

Change-Id: I828a6a98d27a45a8afd07236a2bd0aa3cbd3fb2c

In handle_negotiated_sdp(), use session->active_media_state when
session->pending_media_state is empty.  The 200's SDP should be fed into
handle_negotiated_sdp_session_media() together with the already negotiated
state, which is now in session->active_media_state instead.  Only if both
the session's pending and active media are empty should
handle_negotiated_sdp() abort.

ASTERISK-27441

Change-Id: If0d5150ffe6f38d8a854831fef37942258d4629c

luaL_openlib got removed with Lua 5.2.
luaL_newstate is available in all versions.

ASTERISK-27718

Change-Id: I9c8c8880315ee36ab740d7c40153306c0bfd6f71

ASTERISK-27722

Change-Id: Ie7b8c30d86cb00a54d6ac4e09e6f28f42d2bd52c

ASTERISK-27719

Change-Id: I230c5f9f316b2e9465c093c13580f72ebbaf67a7