Rewrite object-print methods in cedet to be cl-print-object methods

Rewrite object-print methods in cedet to be cl-print-object methods

* lisp/cedet/semantic/db-el.el (object-print): Ditto.
(object-print): Ditto.

* lisp/cedet/semantic/db-global.el (object-print): Ditto.

* lisp/cedet/semantic/db.el (object-print): Remove; unused.
* lisp/cedet/semantic/db.el (semanticdb-debug-info): New method.
(object-print): Rewritten to be cl-print-object.

* lisp/emacs-lisp/eieio.el (eieio-object-name): Allow the EXTRA
argument to be a list of strings.