8016369: java/lang/instrument/RetransformBigClass.sh failing again
Reviewed-by: sla, sergei

7124706: enable RetransformBigClass.sh test when fix for 8013063 is promoted
Summary: The code for this test is fixed now and integrated to TL repo and it passes now.
Reviewed-by: alanb

8005978: shell tests need to use the $COMPILEJDK for javac, jar and other tools
Reviewed-by: chegar

7121600: Instrumentation.redefineClasses() leaks class bytes
Summary: Call JNI ReleaseByteArrayElements() on memory returned by JNI GetByteArrayElements(). Also push test for 7122253.
Reviewed-by: acorn, poonam