Use emacs-version instead of obsolete version variables

Use emacs-version instead of obsolete version variables

* lisp/calendar/icalendar.el (icalendar-version):
* lisp/dframe.el (dframe-version):
* lisp/emacs-lisp/checkdoc.el (checkdoc-version):
* lisp/emulation/edt.el (edt-version):
* lisp/international/mule.el (mule-version):
* lisp/linum.el (linum-version):
* lisp/play/bubbles.el (bubbles-version):
* lisp/textmodes/remember.el (remember-version):
* lisp/url/url-vars.el (url-version):
* lisp/woman.el (woman-version): Use emacs-version instead of obsolete
version variables.