(Frames): Fix typo, add cross references, reword.

(Frames): Fix typo, add cross references, reword.
(Initial Parameters): Reword special-display-frame-alist text.
(Frames and Windows): Reword.  Describe argument norecord for
set-frame-selected-window.
(Input Focus): Describe argument norecord for select-frame.
Remove comment on MS-Windows behavior for focus-follows-mouse.
(Raising and Lowering): Mention windows-frames dichotomy in
metaphor.