(emacs-lisp-file-regexp): Doc fix.

(emacs-lisp-file-regexp): Doc fix.
(byte-compile-dest-file-function): New option.
(byte-compile-dest-file): Doc fix.  Obey byte-compile-dest-file-function.
(byte-compile-cl-file-p): New function.
(byte-compile-eval): Only suppress noruntime warnings about cl functions
if the cl-functions warning is enabled.  Use byte-compile-cl-file-p.
(byte-compile-eval): Check for non-nil byte-compile-cl-functions rather
than for file being previously loaded.
(byte-compile-find-cl-functions): Use byte-compile-cl-file-p.
(byte-compile-file-form-require): Handle the case where requiring a file
indirectly causes CL to be loaded.