Added iSAC coder.

- Imported the floating point implementation of iSAC coder from stable public webRTC release:

http://code.google.com/p/webrtc/source/browse/#svn%2Fstable

- Added a reminder (in a TODO file) to switch from floating point to fixed point implementation.

Please note that this is the minimal amount of functionality we (the speech text-to-speech team) require
for delivering our unit selection algorithms for the Glass project. I'd be happy to address any comments
you have.

Change-Id: I20481680786ec5372258efcea69ea5c9750a321a
Added fixed point iSAC codec implementation.

- Added fixed-point iSAC audio codec implementation (from stable r2699).
- Updated system wrappers (from stable r2699).
- Some cosmetic makefile changes.

Change-Id: If75d503698c11a4e4ceb851529127aadfe52f255
Fixing broken x86 build.

C pitch filter implementation was missing.

Change-Id: I7ab37627c1ddb79bca326c677ecc5f2cb5617647
Add libwebrtc_audio_coding_gnustl_static static library

This change allows to build fully unbundled GoogleTTS apk that can be deployed
on any >= ICS_MR1 device.

All static libraries under src/* can be build using ndk stl libraries, using
WEBRTC_STL varible. libwebrtc_audio_coding_gnustl_static is static version of
libwebrtc_audio_coding, build using gnustl from ndk.

Bug: 6397748
Change-Id: Ibf0acb11d3e605a1d4c668bbf98b0a0bb55399bc
Revert "Add libwebrtc_audio_coding_gnustl_static static library". It tests are broken

This reverts commit 62f88b75e4f2cf47433a0a8948d679c0334f2204

Change-Id: I3a2c531c28d47867eb189d45c04632b54e9acca6
Add libwebrtc_audio_coding_gnustl_static static library

Attempt number 2. Now with working tests.

This change allows to build fully unbundled GoogleTTS apk that can be deployed
on any >= ICS_MR1 device.

All static libraries under src/* can be build using ndk stl libraries, using
WEBRTC_STL varible. libwebrtc_audio_coding_gnustl_static is static version of
libwebrtc_audio_coding, build using gnustl from ndk.

Change-Id: I41a5163eb434432eab3131f5df23ffd311e6159b
The NDK doesn't have libutils.

Change-Id: I61f4e0917954d1557fe4cd1605aecaded68d4a97
Merge tag 'android-4.3_r2.2' into jellybean-mr2.1

Android 4.3 release 2.2