Reviewer needed - two new regression tests for checking PNG reader behaviour

[Pavel Tisnovsky]

Dr Andrew John Hughes wrote:
> On 17:46 Mon 31 Jan     , Pavel Tisnovsky wrote:
> 
> Looks good.  Do you plan to post these for inclusion in OpenJDK7?

Hi Andrew,

I'll try of course, but I'm not sure if Willem van Schaik's permission
to use his PNG images will be appropriate for OpenJDK licence policy :-)

Pavel