I had to manually link /usr/pkg/ libs for png into the X11R6 tree to get
xcursorgen to build (so I can play with the new alpha blended shadow
"redglass")

This suggests that either I have old/broken png build state which should have
gone into /usr/X11R6, or that X11R6/xsrc has an un-stated dependency on a
package, or some other breakage.

I think xcursorgen is disabled in the default build for other reasons, but its
strange that png isn't an 'adopted' library still

cheers

	-George