bug#7716: 23.2.91; Pretest Windows binary doesn't support PNG images

[Eli Zaretskii]

> From: "Drew Adams" <drew.adams@oracle.com>
> Cc: <sean.sieger@gmail.com>, <7716@debbugs.gnu.org>
> Date: Mon, 10 Jan 2011 14:59:06 -0800
> 
> Just to follow up on the PNG display problem -
> 
> PNG is still not displayed in the latest Windows build I have:
> GNU Emacs 24.0.50.1 (i386-mingw-nt5.1.2600) of 2011-01-03 on 3249CTO

What's the value of the variable libpng-version, and what version of
libpng do you have installed?  These two need to match; see README.W32
in the distro, under "Image libraries".