autobox native types into HLL types - FixedPMCArray
autobox native types into HLL types - FixedPMCArray

* set_<native>_keyed* should now create PMCs of an HLL's flavour
* TODO Iterator, Null/None/Undef - needs some specs


git-svn-id: 6e74a02f85675cec270f5d931b0f6998666294a3@10099 d31e2699-5ff4-0310-a27c-f18f2fbe73fe

ashgti/parrot,ashgti/parrot,ashgti/parrot,ashgti/parrot,ashgti/parrot,ashgti/parrot,ashgti/parrot