- Remove unnecessary and/or old parts.

- Remove unnecessary and/or old parts.
- Add relnote entries:
	msk(4) RX checksum bugfix,
	rdcphy(4) for R6040 10/100 PHY added,
	vte(4) for RDC R6040 added,
	vlan(4) IPv6 LLA interface ID bugfix,
	wpi(4) bugfix,
	md(4) vm.md_malloc_wait sysctl added,
	mmc(4) device detection fixed,
	FFS TRIM support added,
	poweroff(8) added,
	rtld(1) now supports shared objects for filtering,
	sh(1) kill built-in added, and
	KDE 4.7.3.

git-svn-id: svn://svn.freebsd.org/base/stable/9@229787 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f