Reviewed-by: rasbold, jrose, twisti

Summary: Remove the wrong flag -XX:+UseSuperword to fix the Nightly failure
Reviewed-by: kvn, never

Summary: Update the Hotspot version number to HS16 B01 for HS16 fork
Reviewed-by: jcoomes

Summary: initial implementation, with known omissions (x86/64, sparc, compiler optim., c-oops, C++ interp.)
Reviewed-by: kvn, twisti, never

Summary: Asserts and comments to help maintain the correct sizing of certain stubs
Reviewed-by: kvn

6711117: Assertion in 64bit server vm (flat != TypePtr::BOTTOM,"cannot alias-analyze an untyped ptr")
Summary: Delay a memory node transformation if its control or address on IGVN worklist.
Reviewed-by: never

6826960: C2 Sparc: assert(bb->_nodes(_bb_end)->is_Proj(),"skipping projections after expected call")
Summary: Add the check when a Halt node is placed in a separate block.
Reviewed-by: twisti

Summary: Remove usage of _highest_lock field in Thread so that is_lock_owned won't depend on the correct update of that field.
Reviewed-by: never, dice, acorn

Reviewed-by: kvn

Reviewed-by: kvn, jcoomes

Summary: Use a HaltNode on the fall through path of the AllocateArrayNode to indicate that it is unreachable if the array length is negative.
Reviewed-by: never, jrose

Summary: Update the HS15 Build number to 05 and fix copyright date of HOTSPOT_VM_COPYRIGHT
Reviewed-by: jcoomes

Reviewed-by: xlu, coleenp, kamg, swamyv

Summary: Support multiplex and mutable sun.boot.library.path
Reviewed-by: acorn, dcubed, xlu

Reviewed-by: kvn, jrose

Reviewed-by: jrose, phh, kvn

Summary: Use SSE 4.2 in intrinsics for String.{compareTo/equals/indexOf} and Arrays.equals.
Reviewed-by: kvn, never, jrose

Summary: Tune C2 flags default values for performance.
Reviewed-by: never, phh, iveresov, jmasa, ysr

Summary: When using compressed oops, rather than chaining the overflowed grey objects' pre-images through their klass words, we use GC-worker thread-local overflow stacks.
Reviewed-by: jcoomes, jmasa

Summary: Update the HS15 Build number to 04
Reviewed-by: jcoomes

6822333: _call_stub_compiled_return address handling in SA is broken causing jstack to hang occasionally
Reviewed-by: kvn, twisti

Summary: heapOopSize symbol should be declared as constant in vmStructs and should not be looked up in readVMIntConstants().
Reviewed-by: never, swamyv, coleenp