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

[Sean Sieger]

> So, Sean, please try to debug this on your machine, because the
> binaries I build here don't have that problem.

Okay.

> For starters, where
> (from what archive of which package) did you get the PNG headers?

>From www.zlib.net

zlib version 1.2.5 - April 19th, 2010

and http://www.libpng.org/pub/png/libpng.html

libpng version 1.4.3 - June 26, 2010