Make mjpeg functions available in DLL build

BUG=252
TEST=try bots
R=johannkoenig@google.com

Review URL: https://webrtc-codereview.appspot.com/1818005

git-svn-id: http://libyuv.googlecode.com/svn/trunk@737 16f28f9a-4ce2-e073-06de-1de4eb20be90

README.chromium

 Name: libyuv
 URL: http://code.google.com/p/libyuv/
-Version: 736
+Version: 737
 License: BSD
 License File: LICENSE
 

include/libyuv/mjpeg_decoder.h

@@ -45,7 +45,7 @@ struct SetJmpErrorMgr;
 // MJPEG frames.
 //
 // See http://tools.ietf.org/html/rfc2435
-class MJpegDecoder {
+class LIBYUV_API MJpegDecoder {
  public:
   typedef void (*CallbackFunction)(void* opaque,
                                    const uint8* const* data,

include/libyuv/version.h

@@ -11,6 +11,6 @@
 #ifndef INCLUDE_LIBYUV_VERSION_H_  // NOLINT
 #define INCLUDE_LIBYUV_VERSION_H_
 
-#define LIBYUV_VERSION 736
+#define LIBYUV_VERSION 737
 
 #endif  // INCLUDE_LIBYUV_VERSION_H_  NOLINT