change in call-next-method

[Stephen Leake <stephen_leake@stephe-leake.org>]

I'm updating JDEE to Emacs 25. It has several functions like this:

(cl-defmethod initialize-instance ((this jdee-jddocset) &rest rest)
  (apply 'call-next-method rest)
  (unless (oref this description)
    (oset this :description
	  (if (oref this jdkp)
	      (format "JDK %s Javadoc" (oref this version))
	    (let ((file (jdee-url-file (oref this url))))
	      (if (string-match ".*\\/\\(.*?\\)\\/doc\\/api" file)
		  (match-string 1 file)
		(jdee-url-name (oref this url))))))))

This breaks if I just change call-next-method to cl-call-next-method. In
Emacs 24, `call-next-method' is a defun that does the right thing here
(calls the default superclass init). In Emacs 25, cl-call-next-method is
a defun that throws an error; cl-defmethod is supposed to replace plain
calls to cl-call-next-method with an in-line call to the appropriate
method.

As far as I can tell, the only reason for the call to call-next-method
is to process the constructor args in `rest', storing them in the
appropriate slots.

What is the right way to do that in Emacs 25? I don't see anything in
the CL manual about this, and I can't find the relevant code by reading
the implementations of cl-defmethod or cl-generic.

--
-- Stephe