bug#65191: 29.1; -ms and -cr CL options don't work

[Eli Zaretskii]

> From: Po Lu <luangruo@yahoo.com>
> Cc: Peter Mao <peter.mao@gmail.com>,  65191@debbugs.gnu.org
> Date: Thu, 10 Aug 2023 15:04:39 +0800
> 
> -ms doesn't work on GNOME systems, as a consequence of XRender cursors
> being configured by default.  Those cursors aren't simple bitmaps, and
> thus cannot be recolored.

Perhaps we should document this, at least in PROBLEMS, if not in the
doc string of set-mouse-color.  Like, say that this doesn't work on
GNOME systems and on MS-Windows?

> I will look into -cr.

Thanks.