Fixed header docs for the joystick hat position

--HG--
extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%40578

include/SDL_events.h

@@ -162,9 +162,9 @@ typedef struct {
 	Uint8 which;	/* The joystick device index */
 	Uint8 hat;	/* The joystick hat index */
 	Uint8 value;	/* The hat position value:
-				8   1   2
-				7   0   3
-				6   5   4
+			    SDL_HAT_LEFTUP   SDL_HAT_UP       SDL_HAT_RIGHTUP
+			    SDL_HAT_LEFT     SDL_HAT_CENTERED SDL_HAT_RIGHT
+			    SDL_HAT_LEFTDOWN SDL_HAT_DOWN     SDL_HAT_RIGHTDOWN
 			   Note that zero means the POV is centered.
 			*/
 } SDL_JoyHatEvent;