The following patch fixes some of the bitrot for the Nintendo DS port.
The support is still basic at the moment, but it allows to run the "general"
test under the current head of tree (parent: 5269:11bd1585efb5 tip).
Most of the patch is mine, but I integrated a couple changes that John
Magnotti posted on Feb 1st.

The window flags mean the window is OpenGL capable.  The surface flag means that the surface is a stub surface representing a window that has an OpenGL context attached.

Pavel Kanzelsberger to SDL

I tried to submit a SDL application to the Mac AppStore and it got rejected because SDL cocoa is using a Private (non-public) API. Problematic part is here:

SDL_cocoaevents.m

@implementation NSApplication(SDL)
- (void)setRunning
{
    _running = 1;
}
@end

Symbol _running in NSApplication is private and shouldn't be used. Any ideas what could I do about this?

There is only one width and height for the window.  If those are changed during the course of a fullscreen mode change, then they'll stay that size when returning to windowed mode.

There are still some problems with the ConvertNSRect() calculations when switching video modes, which causes wierd window positioning issues, and the fullscreen window is still minimized on exit.

Also added Ctrl-Enter keybinding to the test code to toggle fullscreen mode for testing.

Added an untested shader for YV12 textures