[SDL] Alt-F4 not working on Windows

[René Dudfield]

hello,

alt-f4 for games under windows - especially full screen games, often
do NOT close the program.

That's the convention for windows games that I've noticed for ages.
Some games quit this way, but a lot don't.

Games get you out of the windows, and take over the computer.  You
don't have the same look, or feel with windows games - no conventions
should apply :)


Generally - I think anything that allows your game to work x-platform
is good for SDL.  However following OS conventions is nice - but I
don't think alt+f4 for games is a windows convention.

- cu