Update a ton of audio code to use size_t more correctly and in general reduce

webrtc/modules/audio_coding/codecs/isac/fix/source/pitch_filter_armv6.S

 @
 @ Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
 @
 @ Use of this source code is governed by a BSD-style license
 @ that can be found in the LICENSE file in the root of the source
 @ tree. An additional intellectual property rights grant can be found
 @ in the file PATENTS.  All contributing project authors may
 @ be found in the AUTHORS file in the root of the source tree.
 @
 
 @ Contains the core loop routine for the pitch filter function in iSAC,
 @ optimized for ARMv7 platforms.
 @
 @ Output is bit-exact with the reference C code in pitch_filter.c.
 
 #include "webrtc/system_wrappers/interface/asm_defines.h"
 #include "settings.h"
 
 GLOBAL_FUNCTION WebRtcIsacfix_PitchFilterCore
 .align  2
 
 @ void WebRtcIsacfix_PitchFilterCore(int loopNumber,
 @                                    int16_t gain,
-@                                    int index,
+@                                    size_t index,
 @                                    int16_t sign,
 @                                    int16_t* inputState,
 @                                    int16_t* outputBuf2,
 @                                    const int16_t* coefficient,
 @                                    int16_t* inputBuf,
 @                                    int16_t* outputBuf,
 @                                    int* index2) {
 DEFINE_FUNCTION WebRtcIsacfix_PitchFilterCore
   push {r4-r11}
   sub sp, #8
@@ skipping 99 matching lines @@
   strh  r2, [r6], #2          @ outputBuff2[*index2 + PITCH_BUFFSIZE]
   bgt LOOP
 
   add sp, #8
   pop {r4-r11}
   bx  lr
 
 .align  2
 kDampFilter:
   .short  -2294, 8192, 20972, 8192, -2294