[Ident] Replace an UNBOXED pragma with UNPACK
[Ident] Replace an UNBOXED pragma with UNPACK

UNBOXED isn't recognised on 6.10.  When did this pragma get renamed ?
Do we need to go back and check 6.8 ?

darcs-hash:20090126095104-db939-919bc0a7b1967084aaca41a77fc2f41b0016fac1.gz

jthornber/language-c-ejt,jthornber/language-c-ejt,jthornber/language-c-ejt