Log Message:
Bump dependency on bsetroot for the boxes so that they all require a bsetroot
that works without blackbox and uses it's own NLS files.

While we're at it, nitpick the following:
fluxbox: as pointed out in PR pkg/19687, fluxbox will detect Xft2 (if available)
	 and depend on it automatically.  Options were:  add
	 CONFIGURE_ARGS+= --disable-xft
	 or include Xft2's buildlink.  For the time being, add the buildlink
	 following openboxes example.
openbox: USE_BUILDLINK2=YES -- otherwise including buildlink2's is a no-op