Allow system jpeg to be used instead of libjpeg_turbo.

BUG=56
TESTED=untested
R=tpsiaki@google.com

Review URL: https://webrtc-codereview.appspot.com/7339004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@975 16f28f9a-4ce2-e073-06de-1de4eb20be90

README.chromium

 Name: libyuv
 URL: http://code.google.com/p/libyuv/
-Version: 974
+Version: 975
 License: BSD
 License File: LICENSE
 

include/libyuv/version.h

@@ -11,6 +11,6 @@
 #ifndef INCLUDE_LIBYUV_VERSION_H_  // NOLINT
 #define INCLUDE_LIBYUV_VERSION_H_
 
-#define LIBYUV_VERSION 974
+#define LIBYUV_VERSION 975
 
 #endif  // INCLUDE_LIBYUV_VERSION_H_  NOLINT

libyuv.gyp

@@ -72,8 +72,8 @@
             'HAVE_JPEG'
           ],
           'conditions': [
-            # Android uses libjpeg for system jpeg support.
-            [ 'OS == "android" and use_system_libjpeg == 1', {
+            # Caveat system jpeg support may not support motion jpeg
+            [ 'use_system_libjpeg == 1', {
               'dependencies': [
                  '<(DEPTH)/third_party/libjpeg/libjpeg.gyp:libjpeg',
               ],