Alpha Transparency in the Development Releases

[dgud]

Hmm, the png loader have changed between the releases, in 2.* we use the image loader
supplied by wxWidgets which uses the standard libpng libray i.e. from the offical standard release.

In 1.5.4. and earlier we used a png-loader I had written in erlang, so if anything the one
in old wings should be wrong and the new one better
So that is strange I will take a look at the png and how we handle it in new wings code.