This replaces AST_INLINE_API allocators in utils.h with real functions
implemented in astmm.c.  Associated macro's are also moved from utils.h
to astmm.h.

Remove menuselect conflicts between MALLOC_DEBUG and DEBUG_CHAOS as they
can now be combined.

This has multiple benefits:
* Simplifies asterisk/utils.h by removing inline functions and use of
  the logger.
* Removal of these inline functions decreases size of Asterisk and
  module binaries by 1% or more.
* Puts memory management functions together with and without
  MALLOC_DEBUG enabled, simplifying management of the code.
* Enables DEBUG_CHAOS for ASTMM_REDIRECT and bundled pjproject.

Change-Id: If9df4377f74bdbb627461b27a473123e05525887

Adds binaural synthesis to bridge_softmix (via convolution using libfftw3).
Binaural synthesis is conducted at 48kHz.
For a conference, only one spatial representation is rendered.
The default rendering is applied for mono-capable channels.

ASTERISK-26292

Change-Id: Iecdb381b6adc17c961049658678f6219adae1ddf

 * Add some type casting so tv_usec can really be a long, instead of
   some strange platform specific type.

 * Add some .dylib style files to .gitignore.

 * Switch from using -Xlinker to -Wl,. For [reasons unknown][], newer
   versions of GCC, when compiling the Homebrew formula for Asterisk,
   are not properly passing the -Xlinker options to the linker. Given
   that -Wl, does exactly the [same thing][], and does it properly, this
   patch changes the -Xlinker options to use -Wl, instead.

 [reasons unknown]: http://bit.ly/1SUbEYx
 [same thing]: https://gcc.gnu.org/onlinedocs/gcc/Link-Options.html

Change-Id: Id5e6b3c6cc86282ea5fca630dc3991137c5bf4dd

Add the .gitignore and .gitreview files to the asterisk repo.

NB:  You can add local ignores to the .git/info/exclude file
without having to do a commit.

Common ignore patterns are in the top-level .gitignore file.
Subdirectory-specific ignore patterns are in their own .gitignore
files.

Change-Id: I842a1588ff27d8a0189f12d597f0a7af033d6c69
Tested-by: George Joseph