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/celt_sources.mk b/celt_sources.mk
index 6f0a90e..e1aee8f 100644
--- a/celt_sources.mk
+++ b/celt_sources.mk
@@ -1,5 +1,7 @@
 CELT_SOURCES = celt/bands.c \
 celt/celt.c \
+celt/celt_encoder.c \
+celt/celt_decoder.c \
 celt/cwrs.c \
 celt/entcode.c \
 celt/entdec.c \
@@ -14,3 +16,6 @@
 celt/quant_bands.c \
 celt/rate.c \
 celt/vq.c
+
+CELT_SOURCES_ARM = \
+celt/arm/armcpu.c