Won't compile on AllegroExpress

[Symbolics]

Ironically, the fork won't compile on AllegroExpress. There is however an AllegroExpress fork by @earl-ducaine that might hold some clues. It may be worth merging these two forks, since the goals appear to be the same.

[Symbolics]

Specifically the problem is found in commands.lisp, and possibly the cause is in ptype1.lisp. @earl-ducaine's fork comments out commands.lisp and command-processor.lisp, in the system definition (ASD) file, so it may be that they are not fixed there either.

;;; Compiling file /usr/home/common-lisp/clim2/clim/ptypes1.lisp
; While FILE-COMPILING #'ENSURE-PRESENTATION-TYPE in
#P"/usr/home/common-lisp/clim2/clim/ptypes1.lisp"
; starting at file character position 38493:
Warning: Free reference to undeclared variable CLASS-NAME assumed
         special.
;;; Writing fasl file
;;;   /usr/home/.cache/common-lisp/acl-10.1-bsd-x86/usr/home/common-lisp/clim2/clim/ptypes1-tmp71rlabp2.fasl
;;; Fasl write complete
Warning: Lisp compilation had style-warnings while
         compiling #<CL-SOURCE-FILE "clim/core" "clim" "ptypes1">
; Fast loading
;    /usr/home/.cache/common-lisp/acl-10.1-bsd-x86/usr/home/common-lisp/clim2/clim/ptypes1.fasl
;;; Compiling file /usr/home/common-lisp/clim2/clim/completer.lisp
; While FILE-COMPILING #'(:TOP-LEVEL-FORM "completer.lisp" 1044) in
#P"/usr/home/common-lisp/clim2/clim/completer.lisp"
; starting at file character position 1044:
Error: Attempt to take the value of the unbound variable `CLASS-NAME'.
  [condition type: UNBOUND-VARIABLE]