Added jpeg streaming classes.

- Provides streaming operations for decompressing/compressing
  JPEG files.
- Allows pixel operations to be performed on large JPEG images
  without holding the entire bitmap in memory.

Change-Id: I597ddf282b59d2ba6d6bca4722208121e3728f94
diff --git a/proguard.flags b/proguard.flags
index 8cb0486..844c163 100644
--- a/proguard.flags
+++ b/proguard.flags
@@ -84,3 +84,8 @@
   *** toArray(...);
 }
 -keep class com.android.gallery3d.util.ProfileData { *; }
+
+# - Required for running jpeg stream tests on userdebug
+-keep class com.android.gallery3d.jpegstream.JPEGOutputStream { *; }
+-keep class com.android.gallery3d.jpegstream.JPEGInputStream { *; }
+-keep class com.android.gallery3d.jpegstream.StreamUtils { *; }