* fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
don't warn on legal loop code involving more than one aggregate
boolean. (thanks to Nikodemus Siivola)
+ * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
+ in keyword position to MAKE-PACKAGE was not being reported as
+ invalid.
* optimization: rearranged the expansion of various defining macros
so that each expands into only one top-level form in a
:LOAD-TOPLEVEL context; this appears to decrease fasl sizes by