The fix for https://bugs.openjdk.org/browse/JDK-7124245 added the "isIntPacked" flag to mark the non-byte pixels layouts(like TYPE_INT_RGB).
* This flag is passed around even if it is not used by the pixel layout.
* It may cause unnecessary creation of new transform if one type is "rgb && isIntPacked=true" and another one is "bgr && isIntPacked=false", but the actual data is the same.
see: http://hg.openjdk.java.net/jdk8/jdk8/jdk/rev/2cf07dbdee64