Update release note:

Update release note:
	jail improvements: IPv4, IPv6, no address support, SCTP fix,
	cpuset(1) support, ddb show jails, version number bump,
	KTR_CALLOUT new tracepoint added,
	Superpages on amd64 and i386,
	acpu_asus(4) Asus A8Sr support added,
	axe(4) reduced csw for better performance,
	fxp(4) improvements including checksum offload, TSO, WoL, and VLAN,
	msk(4) hang up issue due to misalignment workaround,
	mxge(4) newer hardware support and media types,
	re(4) better miibus interaction support,
	rl(4) better miibus interaction support and fixes for >4GB system,
	IPv4 source address selection,
	tap(4) TAPGIFNAME ioctl added,
	unix(4) MPSAFE,
	sdhci(4) kernel dump support,
	EA semantics of [am]time update changed,
	atacontrol(8) minor nits fixed,
	dirname(1) multiple arguments support,
	dumpfs(8) -f flag added,
	fsck(8) s/-C/-D/,
	ln(1) -w flag added,
	netstat(1) unix sockets stats in -L flag,
	pciconf(8) -b flag added, and
	stat(1) octal s[gu]id in -x flag.

Approved by:	re (implicit)

git-svn-id: svn://svn.freebsd.org/base/releng/7.2@191522 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f