pngout (release 20130221)

The [latest port by Jonathon Fowler](http://www.jonof.id.au/kenutils) of Ken Silverman's PNGOUT.

The license from [Ken Silverman's Utility Page](http://www.advsys.net/ken/utils.htm#pngoutkziplicense):
> - The command line versions of PNGOUT.EXE and KZIP.EXE are free, as are the Mac and Linux ports. You may use PNGOUT- or KZIP-compressed content for non-commercial or commercial purposes.
> - Redistributing, repackaging, or reusing the PNGOUT or KZIP executable is prohibited without the express consent of Ardfry Imaging, LLC, and a formal business agreement.

I'm uncertain as to what extent Homebrew would qualify as "redistributing", seeing as how the Formulas are essentially just community-shared bookmarks, aren't they? Does this disqualify PNGOUT from appearing in homebrew-binary?