Shared directories can now be created independently by the pacakges
needing them and will be removed automatically by pkg_delete when empty.
Packages needing empty directories can use the @pkgdir command in PLIST.
Discussed and ok'd in thread starting at
http://mail-index.netbsd.org/tech-pkg/2009/06/30/msg003546.html
DRI is the direct rendering infrastructure in XFree86 and X.org, which
provides 3D hardware acceleration. Most 3D drivers have a number of
options for tuning the performance and visual quality. DRIconf is a
configuration applet that allows you to change these parameters.
