Xwem uncompilable under MS Windows

[Ben Wing]

Xwem cannot be compiled under MS Windows because x-emacs-application-class
is not defined.  Loading xwem-minibuffer does this:

;;;; On-load actions:
;; Define application
(add-to-list 'xwem-applications-alist
             `("xemacs-xwem-minibuffer"
                   (and (class-name ,(concat "^" x-emacs-application-class
"$"))
                        (class-inst ,(concat "^" xwem-minibuffer-name
"$")))))

And xwem-main does (require 'xwem-minibuffer).