add header for G++4.3
add header for G++4.3

leiyangyou/libvips,mcanthony/libvips,jcupitt/libvips,wishabi/libvips,jcupitt/libvips,leiyangyou/libvips,lovell/libvips,wishabi/libvips,wishabi/libvips,mcanthony/libvips,lovell/libvips,leiyangyou/libvips,jcupitt/libvips,jcupitt/libvips,mcanthony/libvips,lovell/libvips,lovell/libvips,wishabi/libvips,leiyangyou/libvips,mcanthony/libvips