#20 SDL includes for player incorrect on Debian

[Nicholas Humfrey]

This may be an autoconf/automake problem.

This works on Debian:
<SDL/SDL.h>

This works on most other platforms:
(and I think is the correct way to do it for SDL)
#include <SDL.h>

[hwickabab:~] njh% sdl-config --cflags
-I/sw/include/SDL -D_THREAD_SAFE

njh@niaomh:~$ sdl-config --cflags
-I/usr/include/SDL -D_REENTRANT

oqtplayer_CFLAGS = -I/usr/include/SDL -D_REENTRANT