Add some support for GHC's new ByteArray copying primitives
Add some support for GHC's new ByteArray copying primitives

Ignore-this: 90c8634281111cad06e79f0e9e40e3c0

darcs-hash:20110812160146-b2b0a-f3d35a7b6faa3ff6e917dc6e6e77809fec190e99.gz

reinerp/primitive