Update to devhelp-3.8.1.

Written by: Antoine Jacoutot <ajacoutot@openbsd.org>

Conflicts:
	x11/gnome/devhelp/patches/patch-configure
Update to GraphicsMagick 1.3.18.

ok sthen@

Written by: Brad Smith <brad@openbsd.org>

Conflicts:
	graphics/GraphicsMagick/patches/patch-configure