mx gate: execute unittests with --fail-fast option.
Introduce FrameMap.clearReference().
Make ReferenceMap Clonable.
Add ReferenceMap.mergeMaps().
Add LocationMarker.
checkcastArraycopy: if src and dest are equal, unchecked variant can be used
removed reference to com.oracle.graal.compiler.CompilerThread from VM code (part 2)
mx: run findbugs with the appropriate jdk
made initialization of the Graal class loader and well known Graal classes lazy
Merge.
Rename ReferenceMap.mergeMaps() to updateUnion().
Rename LIRFrameState.markLocation(ReferenceMap) to updateUnion(ReferenceMap).
ensure the error message about missing Graal classes is printed exactly once
Merge.
mx: fix missing frozenset constructor to fix intersection
OM: rename transitions
OM: iterate over properties using property map instead of parent chain
[SPARC] SPARCScratchRegister optionally logs the stacktrace where the register is requested (Just for debugging)
OM: remember transition from parent and walk transitions instead of properties in replaceProperty,removeProperty
OM: lazy initialization of leaf assumption