chan_sip: Trigger reinvite if the SDP answer is included in the SIP ACK

Under certain conditions, a SIP transaction involving directmedia wouldn't
trigger a re-invite because the SDP answer was included in an ACK instead
of in a message that we would have triggered the invite with. This patch
just queues a source change control frame if the dialog is using
directmedia when we find sdp for an ACK.

(closes issue AST-913)
Reported by: Thomas Arimont
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chan_sip: Use pvt outgoing_call variable to set Remote-Party-ID Header

Previously the pvt SIP_OUTGOING flag was used instead, which will frequently
flip during reinvites.

(closes issue AST-897)
Reported by: Thomas Arimont
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Add module reload instrumentation for TEST_FRAMEWORK

This adds AMI events for module reloads when Asterisk is built with
TEST_FRAMEWORK enabled and corrects generation of the module load AMI
event.

(issue PQ-1126)
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Handle integer over/under-flow in ast_parse_args

The strtol family of functions will return *_MIN/*_MAX on overflow. To
detect when an overflow has happened, errno must be set to 0 before
calling the function, then checked afterward.

(closes issue ASTERISK-20120)
Reported by: Matt Jordan
Review: https://reviewboard.asterisk.org/r/2073/
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Add some additional H.264 attributes, "max-smbps" and "max-fps", for passthrough.

(closes issue ASTERISK-20206)
Reported by: ddkprog
Patches:
     res_format_attr_h264.c.diff uploaded by ddkprog (license 6008)
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rtp: Ensure defaults are set without rtp.conf.

While building up a new install to test chan_motif, I ran into a failure
due to icesupport being disabled.  This was due to me not having an
rtp.conf.  It was intended in the code for it to be enabled by default,
but it was only applied if rtp.conf existed.

This patch updates res_rtp_asterisk to be consistent in how it handles
defaults.  A few options didn't have their default values set globally,
including icesupport.  They are now set and icesupport is enabled by
default, even if you do not have an rtp.conf.
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Add instrumentation to subsystem reloads

When Asterisk is built with TEST_FRAMEWORK defined, Asterisk will now
generate TestEvent AMI events on subsystem reloads such as cdr, dnsmgr,
extconfig, etc.

(issue PQ-1126)
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When a peer registers using WebSocket do not resolve the Contact provided.

(closes issue ASTERISK-20238)
Reported by: james.mortensen
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Merged revisions 371482 from http://svn.asterisk.org/svn/asterisk/branches/11
Fix memory leak in XML documentation

When formatting documentation fields, the XML documentation parser calls
xmldoc_get_formatted.  This function allocates a string buffer at the
beginning of its routine.  Unfortunately, on certain code paths, it also
calls xmldoc_string_cleanup, which assumes that it will create the string
buffer.  The previously allocated string buffer is then leaked by the
xmldoc_string_cleanup routine.

Now: we don't do that.

(closes issue AST-932)
Reported by: Alexander Homig
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Update module support level on a variety of modules and compiler options

Some core support modules and compiler options were no longer tagged with a
module support level.  This patch adds 'core' back to those options.

Note that this patch modifies a few of the patches provided by Andrew Latham
slightly.  res_curl and res_fax are both 'core' supported modules.

(closes issue ASTERISK-20215)
Reported by: Andrew Latham
Tested by: mjordan
Patches:
  astcanary.diff (license #5985) uploaded by Andrew Latham
  cflagsxml.diff (license #5985) uploaded by Andrew Latham
  curl_fax.diff (license #5985) uploaded by Andrew Latham
  soundsxml.diff (license #5985) uploaded by Andrew Latham
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Merged revisions 371507 from http://svn.asterisk.org/svn/asterisk/branches/11
Make the name of the "HangupCauseClear" application consistent

The name of the "HangupCauseClear" application is "HangupCauseClear",
not "HangupcauseClear".  The incorrect case of 'cause' caused the
XML documentation to not register properly.

As an aside, this commit message felt very awkward, but I'm not sure
how else to note that "X", which has to be "X", was referred to as "x".

(closes issue ASTERISK-20253)
Reported by: Andrew Latham
Patches:
  hangupcause.diff uploaded by Andrew Latham (license #5985)
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Fix typo in JabberSend that looked for '2' instead of '@' in recipient argument

The summary says about all there is to say.

(closes issue ASTERISK-20239)
Reported by: Gregory Porras
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Remove old debug code from http configuration loading

(closes issue ASTERISK-20254)
Reported by: Andrew Latham
Patches:
  http.diff uploaded by Andrew Latham (license #5985)
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Apply work-around for BETTER_BACKTRACES crash

When compiling with BETTER_BACKTRACES enabled, Asterisk will sometimes
crash when "core show locks" is run. This happens regularly in the
testsuite since several tests run "core show locks" to help with
debugging. This seems to be a fault with libraries on certain operating
systems (notably CentOS 6.2/6.3) running on virtual machines and
utilizing gcc 4.4.6.

(issue ASTERISK-20090)
Fix for commit r371535
Ignore recovered zero-length secondary UDPTL packets

In some cases, recovering lost packets using the secondary packet
recovery mechanism with UDPTL/T.38 can result in the recovery of
zero-length packets. These must be ignored or the frame generated from
them can cause segfaults and allocation failures.

(closes issue ASTERISK-19762)
(closes issue ASTERISK-19373)
Reported-by: Benjamin (bulkorok)
Reported-by: Rob Gagnon (rgagnon)
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Use thread-local storage to store pj_thread_descs.

pj_thread_register() takes a parameter of type pj_thread_desc.
It was assumed that pj_thread_register either used this item
temporarily or made a copy of it. Unfortunately, all it does is
keep a pointer to the structure in thread-local storage. This
means that if our pj_thread_desc goes out of scope, then pjlib
will be referencing bogus data quite often, most commonly on
operations involving a pj_mutex_t.

In our case, our pj_thread_desc was on the stack and went out
of scope very shortly after registering our thread with pjlib.
With this change, the pj_thread_desc is stored in thread-local
storage so the pointer that pjlib keeps in thread-local storage
will reference legitimate memory.

(closes issue ASTERISK-20237)
reported by Jeremy Pepper
Patches:
	ASTERISK-20237.patch uploaded by Mark Michelson (license #5049)
Tested by Jeremy Pepper
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Add scoped locks to Asterisk.

With the SCOPED_LOCK macro, you can create a variable
that locks a specific lock and unlocks the lock when the
variable goes out of scope. This is useful for situations
where many breaks, continues, returns, or other interruptions
would require separate unlock statements. With a scoped lock,
these aren't necessary.

There are specializations for mutexes, read locks, write locks,
ao2 locks, ao2 read locks, ao2 write locks, and channel locks.
Each of these is a SCOPED_LOCK at heart though.

Review: https://reviewboard.asterisk.org/r/2060
Fix misuses of asprintf throughout the code.

This fixes three main issues

* Change asprintf() uses to ast_asprintf() so that it
pairs properly with ast_free() and no longer causes
MALLOC_DEBUG to freak out.

* When ast_asprintf() fails, set the pointer NULL if
it will be referenced later.

* Fix some memory leaks that were spotted while taking
care of the first two points.

(Closes issue ASTERISK-20135)
reported by Richard Mudgett

Review: https://reviewboard.asterisk.org/r/2071
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Add support for call-id logging to chan_motif.

Review: https://reviewboard.asterisk.org/r/2077/
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