add comments to conversion functions in C.Op, add B2B reinterpret cast coversion
add comments to conversion functions in C.Op, add B2B reinterpret cast coversion

darcs-hash:20080320182452-1a7c6-28c294952b90ea5de3a46e25241c14a53f8ae4ba

jimcrayne/jhc,jimcrayne/jhc,jimcrayne/jhc,jimcrayne/jhc