[Ecls-list] More fixes

[Juan Jose Garcia Ripoll]

I have submitted more fixes in the CVS. They are all minor fixes, except for
+ :DEFAULT-INITARGS is now a valid option for DEFINE-CONDITION
+ The slot option (classes and conditions) :TYPE can be NIL 
+ The parents list for DEFINE-CONDITION defaults to '(CONDITION)
+ &whole and &key variables in destructuring lambda lists may themselve be 
destructuring forms, as in (DEFMACRO (&WHOLE (A . B) C . D))

List of errors in Paul's regression test went down to about 130 :-)

Juanjo