bug#1322: dedicated *Help* and M-x help-for-help

[martin rudalics]

> `help-on-help' cannot deal with dedicated windows.
> To reproduce:
>
> (setq special-display-buffer-names '("*Help*"))
> (help-on-help)
>
> This will open a new frame with the *Help* buffer.  However, as soon as
> the user presses one of the keys (e.g., `a`), the frame is iconified,
> which is unexpected and not what you get when the window is not dedicated.

This is a known problem, I shortly mentioned in

http://lists.gnu.org/archive/html/bug-gnu-emacs/2008-10/msg00029.html


Unfortunately, `help-on-help' is broken in a couple of other respects as
well.  I'm working on a comprehensive solution.

martin