8051484: Test compiler/6932496/Test6932496.java failed to compile after JDK-8011044: 1.5 is no longer supported
Reviewed-by: kvn, roland

Reviewed-by: kvn, ctornqvi

Summary: C++ code pattern from 8040121 is incorrect
Reviewed-by: kvn

8049252: VerifyStack logic in Deoptimization::unpack_frames does not expect to see invoke bc at the top frame during normal deoptimization
Summary: Add missing check for reexecute flag to VerifyStack code.
Reviewed-by: roland

8049043: Load variable through a pointer of an incompatible type in hotspot/src/share/vm/runtime/sharedRuntimeMath.hpp
Summary: Fixed parfait warnings caused by __HI and __LO macros in sharedRuntimeMath.hpp by using a union.
Reviewed-by: kvn, drchase

8040121: Load variable through a pointer of an incompatible type in src/hotspot/src/share/vm: opto/output.cpp, runtime/sharedRuntimeTrans.cpp, utilities/globalDefinitions_visCPP.hpp
Summary: Fixed parfait warnings in globalDefinitions files by using a union for casts.
Reviewed-by: kvn

Summary: Add Resource/HandleMark in the work() method of some AbstractGangTask to reclaim these resources earlier.
Reviewed-by: tschatzl, goetz

Summary: call rtm_deopt() only if there were no compilation bailouts before.
Reviewed-by: kvn

Summary: replace door_cred with door_ucred call
Reviewed-by: dholmes, sspitsyn

Summary: Try to reclaim humongous objects at every young collection after doing a conservative estimate of its liveness.
Reviewed-by: brutisso, mgerdin