2. SDL_CreateTextureFromSurface() now has best texture format search for non-alpha pixel formats.
3. Added comparision for pixels packed order to the video mode sorting callback to avoid mixing 1555/565/4444 pixel formats.
4. Added sorting call for current video mode list after each new video mode addition, because SDL_GetClosestDisplayMode() requires video modes to be sorted, and this is one place only where we can detect video modes addition.

--HG--
extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%403636