8210725: com/sun/jdi/RedefineClearBreakpoint.java fails with waitForPrompt timed out after 60 seconds
8210748: [TESTBUG] lib.jdb.Jdb.waitForPrompt() should clarify which output is the pending reply after a timeout
Reviewed-by: jcbeyler, gadams, sspitsyn
8210557: G1 next bitmap verification at the end of concurrent mark sometimes fails
Summary: Removed unnecessary verification that can cause spurious false alarm.
Reviewed-by: sjohanss, kbarrett