Also move the dd-only library code into the dd section (so a future
maintainer will know to keep/remove them as a block) and fix the one
build warning remaining.
Change-Id: Ibf6b28ef05e4cbb70b9308b0f4387f5af5b7fa94
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