Further cleanup of the "cl-" namespace. Fit CL in 80 columns.

Further cleanup of the "cl-" namespace.  Fit CL in 80 columns.
* lisp/emacs-lisp/cl-macs.el (cl--pop2, cl--optimize-safety)
(cl--optimize-speed, cl--not-toplevel, cl--parse-loop-clause)
(cl--expand-do-loop, cl--proclaim-history, cl--declare-stack)
(cl--do-proclaim, cl--proclaims-deferred): Rename from the "cl-" prefix.
(cl-progv): Don't rely on dynamic scoping to find the body.
* lisp/emacs-lisp/cl-lib.el (cl--optimize-speed, cl--optimize-safety)
(cl--proclaims-deferred): Rename from the "cl-" prefix.
(cl-declaim): Use backquotes.
* lisp/emacs-lisp/cl-extra.el (cl-make-random-state, cl-random-state-p):
Use "cl--" prefix for the object's tag.