Why does giflib 4.2.0 require xmlto?

[Torfinn Ingolfsen]

Hello,
It seems that giflib 4.2.0 (graphics/giflib) requires xmlto
(textproc/xmlto) and xmlto drags in w3m, which I do not want.
Why does version 4.2.0 of giflib suddenly require xmlto?
Previous versions of giflib managed fine without it.

-- 
Regards,
Torfinn Ingolfsen