Although the default value of defaultbranch is master I'm adding it
anyways.  This way when new major branches are being created the value
can be updated instead of having to remember the name of the key.

Change-Id: I3db009217c5ae399fb84bee95076f4dbb7fa52d2

If a 183 with sdp response is receive without a To tag the sdp is not
negotiated. According to RFC 3261 section 12.1.2 while a To tag is required,
the client needs to still be able to handle the missing tag case for
backwards compatibility.

This patch, accepted by and applied to pjproject, makes it so if an incoming
180/183 with SDP comes in without a To tag it gets appropriately handled.

ASTERISK-27442 #close

Change-Id: Ic9d6b01e05e8f4874eebbd7adfe05d932025d203

Previously, Asterisk sent srflx only when configured exclusively for IPv4. Now,
srflx is gathered and sent via SDP, even when Asterisk is enabled for
Dual Stack (IPv4+IPv6) and an IPv4 interface is available/used.

ASTERISK-27437

Change-Id: Ie07d8e2bfa7b6fe06fcdc73d390a7a9a4d8c0bc1

res_parking had an inplicit load_pri of 0 meaning it was one of the very
first modules loaded after modules with global symbols.  Set it to
AST_MODPRI_DEVSTATE_PROVIDER as it provides device state for parking
lots.

Change-Id: I297b6fb3ff6993ec004e667b22a74f5925906259

Convert the README file to markdown format, remove the old README.  This
causes websites like github to display the README in a much nicer
format with live links.  The raw file is still very readable from
plain text editors and terminals.

Change-Id: I7d13131764a9a9026e5f8a6ddb245a01bbd788e7

ASTERISK-27434

Change-Id: Iaeed89b4fa05d94c5f0ec2d3b7cd6e93d2d5a8f7

Make the comments follow doxygen format, move comments to the line
before each field they describe.

Change-Id: Ic445468398b5e88f13910f7c2f70bd15aad33a27

Change-Id: I81aacfee7cd26e4fc5eef07bca582700c2975bd7

Change-Id: I5ce40035e0a940e4e56f6322c1dcd47fbd509b98

Change-Id: Ideb594f7aae134974fb78d5477ba0853b97b8625

Change-Id: I07907f833b81aeb0128bc9442a2abb52679c7511

Change-Id: I9d56175369363d1dc735504cf78a3a5577069f49

res_mwi_external_ami specified AST_MODFLAG_LOAD_ORDER but didn't set
load_pri, resulting in an actual load priority of 0.  This module only
provides AMI actions so it has no reason to load early.

Change-Id: I82987fcf10d3ea42716b2f9df915b16687fd5839

Instead of specifying AST_MODFLAG_LOAD_ORDER with load_pri
AST_MODPRI_DEFAULT just use AST_MODFLAG_DEFAULT.

Change-Id: I0123258eafce324249433a69df15a85cc16e509f