Reviewed-by: ohair, sherman, chegar

Reviewed-by: darcy, weijun

Summary: Moved non-confidiential test cased from closed repo to open repo
Reviewed-by: martin

Summary: Add regression test for multiple redefinitions of a class break reflection.
Reviewed-by: sspitsyn

Summary: Check for a declared premain() or agentmain() method before an inherited one
Reviewed-by: sspitsyn

Summary: Add regression test for single-threaded bootstrap classloader.
Reviewed-by: sspitsyn