- Renamed pie_PNGLoadFile, because I got confused about pie_ vs. iV_ when working on my terrain stuff, and did not fix it when backporting to trunk
- iTexture (now aka iV_Image, s.a.) is given a depth field to enable support for different number of channels. This is required to support RGB only textures (without adding a useless alpha channel) and eg. for greyscale images like heightmaps
- Simplyfied iV_loadImage_PNG (formerly known as pie_PNGLoadFile, s.a.) and also removed lots of seemingly unnecessary conversions
- Converted page-8 from paletted to RGB for simplification. This multiplied the size by about 3x (still < 100kB)
git-svn-id: svn+ssh://svn.gna.org/svn/warzone/trunk@1580 4a71c877-e1ca-e34f-864e-861f7616d084