0.9.18.48:

0.9.18.48:
        Make calling methods with &OPTIONALs or &KEYs faster and non-consing.

        * Change fast method functions to use the normal Lisp argument
          passing convention, rather than the CLOS-style "required arguments
          as normal Lisp arguments, non-required ones passed as one
          list" convention.
        * Don't do argument parsing manually in the FMFs generated by
          MAKE-METHOD-INITARGS-FORM-INTERNAL1
        * Use &MORE instead of &REST in DFUN lambda lists.
        * Clean up the lambda-list generation mess in cache.lisp / dlisp.lisp