0.8.15.15: Removing non-ANSI FTYPE proclaims and TYPE declarares from PCL

0.8.15.15: Removing non-ANSI FTYPE proclaims and TYPE declarares from PCL
            * Use internal machinary for accessor FTYPE information
               instead of PROCLAIM.
            * Don't declare TYPE for special DEFMETHOD parameters:
               setq-p hack doesn't work for those. Python not happy,
               but no can do right now.
            * Incidentally these changes also fix all current known
               package-lock bugs.