[SDL] CVS Update (driverlist + aRts + 1.1.7 prerelease)

[Mattias Engdegård]

>And I've finally added API calls to list the available audio and
>video drivers, along with a test program 'listdrivers' that will
>show you the drivers available to SDL.  Note that these functions
>return the drivers that will actually be used in initialization,
>not just the ones that are compiled in.

Please don't cast that API in stone. There are reasons to prefer a
more flexible interface. The form (FirstVideoDriver, NextVideoDriver)
isn't very nice since it maintains a hidden state. Better solutions
would be to provide a callback enumeration on the form

EnumerateVideoDriver(void (*f)(something *, void *), void *)

or even simpler, just return a vector of the drivers to the user.

Orthogonally it would be nice to get driver capabilities, not just a
string (which is only good for user choices). A game would pick a driver
with the capabilities it needs, or offer hints to the user for driver
choice. Example:

SDL_DriverInfo **SDL_GetVideoDriverList(int kind)

returning a vector of pointers to structs

struct SDL_VideoDriverInfo {
    char *name, *description;
    int version;
    SDL_VideoInfo *vinfo;
};

perhaps augmented with more information. Care should be taken to arrange
the structs in a way so that we can add capabilites without breaking
binary compatibility