[gif] - fixups from jm
[Gif] - harden ReadFromMemory a bit - t-nelson
[gif] - move template check out of for loop - t-nelson
[TextureManager] Use new gif implementation and remove now unused AnimatedGif class
[gif] - make members private - t-nelson
[gif] - removed trailing whitespaces - notspiff
[GUITexture] Change animation code.