Miscellaneous tweaks.

Miscellaneous tweaks.
* lisp/emacs-lisp/cl-macs.el (dolist, dotimes): Use the same strategy for
lexical scoping as in subr.el's dolist and dotimes.
* lisp/emacs-lisp/bytecomp.el (byte-compile-unfold-bcf):
Silence compiler warning.
* lisp/thingatpt.el (forward-whitespace): Trivial coding style fix.
* lisp/subr.el (with-output-to-temp-buffer): Provide an edebug spec.
* lisp/international/ccl.el (ccl-compile): Trivial simplification.
* lisp/help-fns.el (help-do-arg-highlight): Silence compiler warning.
* lisp/emacs-lisp/testcover.el (testcover-end): Remove spurious
`printflag' argument.
* lisp/emacs-lisp/byte-run.el (make-obsolete, make-obsolete-variable):
Purecopy the whole obsolescence data.