Another Perl Task: review PMC compiler

[Leopold Toetsch]

Investigating some recent dynclass/py*.t I found another problem in the 
PMC compiler (classes/pmc2c2.pl, lib/Parrot/Pmc2c.pm).

On one computer I have in dynclasses/pylong.c temp_base_vtable
           Parrot_default_destroy,
on the second I got:
           Parrot_BigInt_destroy,
The latter is correct, as PyLong inherits from BigInt.
Seems to be another ordering problem, where a hash is used instead of an 
array with inherited vtable methods. pylong.dump has already the wrong 
entry:

    'destroy' => 'default',
in the suoer hash.
Thanks,
leo