Revert r97185 "Update libvpx snapshot to v0.9.7-p1 (Cayuga)."

libvpx/README.chromium

 Name: libvpx
 URL: http://www.webmproject.org
-Version: v0.9.7p1
+Version: v0.9.6-92-gba11e24
 License File: source/libvpx/LICENSE
 
-Date: Tuesday August 16 2011
-Branch: cayuga
-Commit: 20307c70ae96c45b9b00338989b952fb334e4fc9
+Date: Monday April 4 2011
+Commit: ba11e24d47009ac787fdb95ccbd846052e18f26a
 
 Description:
 Contains the sources used to compile libvpx binaries used by Google Chrome and
 Chromium.
 
 The libvpx source is from webmproject.org:
   git://review.webmproject.org/libvpx
 
-Notes on icc (Intel Compiler) builds for linux and mac
+Patches
+
+One patch is included in the patches directory.  It is needed for 
+obj_int_extract.c on x64 linux when using icc, and must be applied
+before running make to avoid link errors.
+
+The patch can be applied by runnning the following command from within 
+source/libvpx:
+
+patch -p0 < ../../patches/01_obj_int_extract.patch
+
+Notes
 
 The mac libvpx build was built with icc v11.1.  In 
 addition to the configuration args listed in vpx_config.c for each target, the
 following additions were made to CFLAGS:
 
 - linux/x64 CFLAGS: -fPIC -ffreestanding
 - linux ia32 CFLAGS: -ffreestanding
-- mac ia32 CFLAGS: -fPIC -ffreestanding -isysroot /Developer/SDKs/MacOSX10.5.sdk -mmacosx-version-min=10.5
+- mac ia32 CFLAGS: -fPIC -ffreestanding
+-isysroot /Developer/SDKs/MacOSX10.5.sdk -mmacosx-version-min=10.5
 
 The -ffreestanding argument removes dependencies on Intel memcpy and memset 
 functions.
 
 For example, the following could be used at libvpx configure time to reproduce 
 the linux x64 build:
 
 CFLAGS="-fPIC -ffreestanding" /path/to/libvpx/configure \
 --target=x86_64-linux-icc --enable-pic --disable-install-docs \
---disable-install-srcs --disable-examples --disable-postproc
+--disable-install-srcs --disable-examples --disable-postproc --disable-psnr
 
 The vpx_config.{asm,h,cc}, and vpx_version.h files generated by the above
 configure command should then be checked in to
 source/config/linux/<(target_arch)/.
 
-Notes about libvpx.gyp
-
 To generate the sources list for libvpx.gyp we ran:
 
   mkdir ++build && cd ++build
   CFLAGS="-fPIC -ffreestanding" bash ../source/libvpx/configure --enable-pic \
     --disable-install-docs --disable-install-srcs --disable-examples \
     --disable-postproc --disable-psnr
   make verbose=true |tee make.out
 
 then trawl through make.out to find the file-names:
 
@@ skipping 51 matching lines @@
   source/config/linux/arm-neon/decoder/neon
 cp source/libvpx/vp8/encoder/arm/armv5te/*.s \
   source/config/linux/arm/encoder/arm5te
 cp source/libvpx/vp8/encoder/arm/armv6/*.s \
   source/config/linux/arm/encoder/armv6
 cp source/libvpx/vp8/encoder/arm/neon/*.s \
   source/config/linux/arm-neon/encoder/neon
 cp source/libvpx/vpx_scale/arm/neon/*.s \
   source/config/linux/arm-neon/vpx_scale/neon