bug#33126: 26.1; xpm2 broken in MacOSX

[Eli Zaretskii]

> Date: Thu, 25 Oct 2018 11:04:52 +0100
> From: Alan Third <alan@idiocy.org>
> Cc: Emacs-Hacker2018@jovi.net, 33126@debbugs.gnu.org
> 
> Done. I created a subsection for macOS, although I’m not sure if this
> is actually a macOS specific issue, or general to systems lacking X11
> libraries (MS Windows?).

The MS Windows build of Emacs uses a hacked version of the X11 libxpm
library, so this problem doesn't exist there.

> +* Runtime problems specific to macOS
> +
> +** macOS doesn't come with libxmp, so only XPM3 is supported.
                              ^^^^^^
A typo.