[PMC] Removed implicit double-underscore prefix logic to override vtable entries when adding Subs to NameSpace PMC.  If PASM still needs a fix, let's do it the right way and add the :vtable attribute to pcc_sub declarations.
[PMC] Removed implicit double-underscore prefix logic to override vtable
entries when adding Subs to NameSpace PMC.  If PASM still needs a fix, let's do it the right way and add the :vtable attribute to pcc_sub declarations.

git-svn-id: 6e74a02f85675cec270f5d931b0f6998666294a3@42170 d31e2699-5ff4-0310-a27c-f18f2fbe73fe

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