add SDL/1.2.15

Signed-off-by: Fotis Georgatos <fotis.georgatos@uni.lu>
add SDL2/2.0.1

Signed-off-by: Fotis Georgatos <fotis.georgatos@uni.lu>
make POV-Ray depend on SDL/1.2.15

Signed-off-by: Fotis Georgatos <fotis.georgatos@uni.lu>
correct sanity_check_paths for libXdmcp

Signed-off-by: Fotis Georgatos <fotis.georgatos@uni.lu>
toolchainopts = {optarch: True}

Signed-off-by: Fotis Georgatos <fotis.georgatos@uni.lu>