[Freeciv-Dev] (PR#12628) gui-win32: graphics cleanups

["James Canete" <use_less@xxxxxxxxxxx>]

<URL: http://bugs.freeciv.org/Ticket/Display.html?id=12628 >

Ok, I went a little overboard with this patch.

The following patch pretty much guts the sprite struct, making it just a
fancy wrapper for a canvas.

It breaks all the code I put in to deal with states where AlphaBlend()
isn't present, breaks all the old alternate fogging algorithms, and is
fairly ugly all around, but I'm fairly sure I can fix most of those
problems eventually.

-James Canete

win32-combinespriteandcanvas.diff.gz
Description: application/unix-tar