Start updating cl.texi for cl-lib changes

Start updating cl.texi for cl-lib changes

* doc/misc/cl.texi: Include emacsver.texi.
Use Emacs version number rather than unchanging cl.el version number.
End all menu descriptions with a period.
Do not use @dfn{CL} for every instance of "CL".
(Overview): Remove no-runtime caveat, and note about foo* names.
(Usage): Use cl-lib rather than cl.
(Organization, Naming Conventions): Update for cl-lib.el.
(Installation): Remove long-irrelevant node.
(Program Structure, Predicates, Control Structure):
Start updating for cl-lib namespace.

* doc/misc/Makefile.in ($(buildinfodir)/cl$(INFO_EXT), cl.dvi, cl.pdf):
Depend on emacsver.texi.