Hopefully this will let us remove the empty file from bionic. It shouldn't
be there because -- unlike BSD -- we don't actually have a libutil.
Change-Id: I7e3042ca120aafa877709797866b52ac62675870
Use more upstream NetBSD, and update those things that were already NetBSD.
Note that unlike bionic, the upstream-netbsd directory isn't pristine; we have
changes marked by __ANDROID__.
Bug: 16493461
Change-Id: I99762bfe02caa0945ea4a184670888a4b5435a1d