Fix incorrect register allocator flags on (Un)CompressPointer ops.

--HG--
extra : rebase_source : fcab51b824d644f8a8705859f024b01d643cde47
Fix operator precedence bug.

--HG--
extra : rebase_source : a31637131cead0b0c30183b3cf5ebc71d7cbce9d
new StackIntrospection interface to allow access to stack contents
new getStackTrace and getCurrentFrame functionality in TruffleRuntime
changelog update
HSAIL: initial support for object allocation in HSAIL kernels
Contributed-by: Tom Deneau <tom.deneau@amd.com>
HSAIL: avoid loading native Okra library twice
Contributed-by: Tom Deneau <tom.deneau@amd.com>
replaced == with .equals()