fix up .gitignore some more
fix up .gitignore some more

Argh more missing stuff in .gitignore.

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