APNG patch for graphics/png port

[Mikhail Teterin]

Sent by Jeremy Lea:
> Hi,
>
> On Mon, Dec 22, 2008 at 03:10:59PM -0500, Mikhail Teterin wrote:
>   
>> Personally, I think, I'm in favor of the last approach, at least for
>> now that animated PNG (APNG) content is non-existent anyway
>>     
>
> Except for many of the chrome icons in firefox, etc.  i.e. doing this
> with break firefox.
Was not one of the advantages of APNG the fact, that a non-Animated PNG 
reader will still show the first frame of the animation? In that case, 
the icons will simply be non-animated...
> Do number one - link mozilla apps against their own
> static libpng.  It really isn't that much space, and the mozilla build
> works that way by default.
>   
I think, I listed an argument against this. The security one. It is also 
"not right" technically -- we aren't building the bundled libz, libbz2, 
nspr, etc. for a good reason...

    -mi