./configure --with-pjproject-bundled
did not display an explanation, when no download utility like wget, curl, or
fetch was installed beforehand, although an explanation existed in code. This
happened because the code expected the variable DOWNLOAD_TO_STDOUT to be empty.
However, the script ./configure set that variable always.

Change-Id: I64c99b76a03525c69471e5055bf124b36a51bbd4

Certain applications (e.g. door-phone) require that also video is transmitted
before a call is accepted.

Change-Id: I9842e1dc2f6e1c2c49dc33fe615255007d2f821e

When app_voicemail calls ast_test_suite_notify with the results of
a user keypress, it formats the keypress as '%c'.  If the user hung up
or some other error occurrs, the result of the keypress is a non
printable character.  This ultimately causes json_vpack_ex to think
it's being passed a non utf-8 string and return an error.

* Keypress results passed to ast_test_suite_notify are now checked with
  isprint() and a '?' is substituted if the check fails.

Change-Id: I78ee188916bbac840f3d03f40201b692347ea865

Change-Id: Ie81830647a23aad61c1162583b6d50adbe6e7822

ASTERISK-27738

Change-Id: I7ca620e3c4dfb4b064a19382c4915aeb42a2a09f

Change-Id: I44b25d6d24c7d9bc1bb38a50774b38883162f98f

Change-Id: I4f0fc09e820eb8d8da2354a177dbcf503c56ddd1

Change-Id: Ia845fae6a84801cc7d9996767b99efb2753cbb48

* ast_cli_complete
* ast_complete_channels
* ast_complete_applications

These generators will now use ast_cli_completion_add if state == -1.

Change-Id: I7ff311f0873099be0e43a3dc5415c0cd06d15756

ASTERISK-27741

Change-Id: I0aa59a54735c6d20b95c54db1bd095dbf93e7adf

ASTERISK-27736

Change-Id: I4cafc8973349d50a7cb7919ddf0bb1aaef4bfc3e

GCC documentation states that when __attribute__((malloc)) is used it
should not return storage which contains any valid pointers.  It
specifically mentions that realloc functions should not have the malloc
attribute, but this also means that complex initializers which could
contain initialized pointers should not use this attribute.

Change-Id: If507f33ffb3ca3b83b702196eb0e8215d27fc7d2

ASTERISK-27734

Change-Id: I8d6e6a1c08c031649764f5277fbbb85e57c3a9d4

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