Add the joystick subsystem

Implied by gamecontroller

Property definitions

sdl2 $ SDLInitFlags :: joystick
	# Add the joystick subsystem
	#
	# Implied by `gamecontroller`
	fun joystick: SDLInitFlags `{ return self | SDL_INIT_JOYSTICK; `}
lib/sdl2/sdl2_base.nit:114,2--117,66