Updating Opus to a pre-release of 1.1

This CL updates Opus to a pre-release of the coming Opus 1.1 version. The code is extracted from http://git.xiph.org/?p=opus.git, commit aee4d8057632ea0cfc1d55d88acf8466b47b7b4b from October 1st 2013.
This version includes both algorithmic and platform optimizations, as well an important fix for a denorm problem when the input goes silent after active audio. The problem causes high CPU usage.

Review URL: https://codereview.chromium.org/28553003

git-svn-id: svn://svn.chromium.org/chrome/trunk/deps/third_party/opus@230378 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/silk_headers.mk b/silk_headers.mk
index 45c6985..316cd4b 100644
--- a/silk_headers.mk
+++ b/silk_headers.mk
@@ -19,6 +19,10 @@
 silk/resampler_rom.h \
 silk/resampler_structs.h \
 silk/SigProc_FIX.h \
+silk/arm/macros_armv4.h \
+silk/arm/macros_armv5e.h \
+silk/arm/SigProc_FIX_armv4.h \
+silk/arm/SigProc_FIX_armv5e.h \
 silk/fixed/main_FIX.h \
 silk/fixed/structs_FIX.h \
 silk/float/main_FLP.h \