Set up some HLL interop configuration.
First round of pir::perl6ize_type => nqp::hllize.
Replace remaining perl6ize_type uses with hllize.
Toss perl6ize_type dynop.
Tag all types as being Perl 6 types.
Add ForeignCode, to wrap foreign code objects.

This means they behave sufficiently Perl 6-like to not blow up:

    say Sub.^methods

And similar.