Summary: Use long jumps to get from patching stubs to deopt blob
Reviewed-by: kvn, never

Summary: This changeset removes the zero-filling thread from G1 and collapses the two free region lists we had before (the "free" and "unclean" lists) into one. The new free list uses the new heap region sets / lists abstractions that we'll ultimately use it to keep track of all regions in the heap. A heap region set was also introduced for the humongous regions. Finally, this change increases the concurrency between the thread that completes freeing regions (after a cleanup pause) and the rest of the system (before we'd have to wait for said thread to complete before allocating a new region). The changest also includes a lot of refactoring and code simplification.
Reviewed-by: jcoomes, johnc

Summary: Rebuild breakpoint cache at gc_epilogue instead of during oops_do
Reviewed-by: dcubed, ysr, coleenp

Summary: With recent G1 allocation path changes, the value of StackShadowPages in fast debug builds of the JVM, is no longer large enough to prevent the JVM C++ code from touching the stack guard pages. Increase the value of StackShadowPages to a suitable value.
Reviewed-by: ysr, tonyp, coleenp

Summary: The Relocator should pass a NULL methodOop when rewriting since its resource array can never contain breakpoints.
Reviewed-by: dcubed, kvn, coleenp

Summary: Refine assertion to work before VMThread has started.
Reviewed-by: ysr, never, dholmes, acorn

Summary: This changeset introduces filtering of SATB buffers at the point when they are about to be enqueued. If this filtering clears enough entries on each buffer, the buffer can then be re-used and not enqueued. This cuts down the number of SATB buffers that need to be processed by the concurrent marking threads.
Reviewed-by: johnc, ysr

Summary: Interpreter expects to see methodOop in rbx on method entry, which needs to be restored after call to profile_method.
Reviewed-by: kvn, never

Summary: Use LDX/STX on v9 and LDD/STD on v8 sparc for volatile long moves.
Reviewed-by: never

Summary: Check buffer size before using and use dynamic buffer sizes for subsequent calls.
Reviewed-by: kamg, dholmes

Reviewed-by: coleenp, jrose, kvn, dcubed

Summary: Revert a (relaxed version of the) bounds-check that was incorrectly removed in the fix for 7008136.
Reviewed-by: jmasa, johnc