qd-package.lisp:

o Don't :USE CMUCL's EXTENSIONS package anymore.  Import just the
  symbols we need.

qd-class.lisp:
o No need to use package qualifiers.

qd-fun.lisp:
o Need package qualifier for MAYBE-INLINE.

qd.lisp:
o Need package qualifier for *INLINE-EXPANSION-LIMIT*
.