Add relnotes entries for upcoming 8.2R (first round):

Add relnotes entries for upcoming 8.2R (first round):
	[ia64] DMA bounce buffer pool increased from 256 to 1024,
	[powerpc] kern.hz 100->1000,
	[powerpc] SMP support on MPC7400-based machines,
	[powerpc] DMA bounce buffer support,
	ddb(8) reset and reboot delay support,
	ddb(8) show cdev,
	memguard(9) improvement to use larger KVA,
	aibs(4) added in favor of acpi_aiboost(4),
	coretemp(4) Xeon 5500/5600 support,
	ichwd(4) Intel NM10 Express chipset support,
	video4linux API support in Linux emulation subsystem,
	alc(4) AR8151/8152 support,
	alc(4) poor UDP performance issue fixed,
	bge(4) TSO fixed,
	bce(4) flow control support,
	bwi(4) for BCM430x and BCM431x added (but not in GENERIC yet),
	bwn(4) padding issue fixed,
	cxgb(4) new sysctls: nfilters, pkt_timestamp, core_clock,
	em(4) 7.1.9,
	igb(4) 2.0.7,
	em(4) and igb(4) statistics counters as sysctl MIB objects,
	em(4) and igb(4) now supports led(4),
	epair(4) linkstate support,
	iwn(4) 6000 series support, firmware version 9.221.4.1,
	ixgbe(4) kernel module building, version 2.2.1,
	mwlfw(4) kernel module building,
	rl(4) WoL support, prefer_iomap knob added,
	sis(4) stability issue fixed,
	ste(4) prefer_iomap knob added,
	sk(4) TX checksum offloading disabled by default,
	altq(4) kernel module building,
	IPsec flow distribution improved,
	proxy ARP issue over Netgraph interfaces fixed,
	an issue with IPv6 use_defaultzone=1 fixed,
	ng_patch(4) added,
	ng_ether(4) issue when associated IF is moved to another vnet fixed,
	TCP BW*DELAY window limiting (inflight) disabled by default,
	TCP path MTU discovery when <256 octets of MTU fixed,
	TCP initial window increase algorithm in RFC 3390 improved,
	VNET now supports IPv4 multicast routing,
	ahci(4) NCQ and PMP disabled on VIA VT8251,
	arcmsr(4) updated to version 1.20.00.17,
	ata(4) device hints for initial ATA mode added,
	ata(4) now checks also on controller side when ata_dma_check_80pin=1,
	mpt(4) now reports max I/O size to the upper layer,
	twa(4) updated to version 3.8.06.003,
	ZFS version 15, metaslab code updated, various bug fixes,
	vfs.zfs.vdec.max_pending reduced from 35 to 10,
	arp(8) -an improvement,
	calendar(1) improved,
	dhclient(8) 10-second period changed,
	du(1) -t threshold added,
	gcore(1) -f added,
	get{host,net,proto}*() returns ERANGE and NS_RETURN for too small buf,
	gpart(8) resize command added,
	ifconfig(8) CIDR subnet width parsing improved,
	jot(1) bug fix,
	newsyslog(8) -S pidfile option added,
	pkill(8) -l option added,
	pmcstat(8) now supports file and network socket for the event source,
	pom(6) -p added,
	powerd(8) -m -M added,
	sh(1) SIGINT handling fixed,
	sh(1) supports "</dev/null &",
	sleep(1) SIGINFO support,
	uname(1) -o added,
	vi(1) bug fix,
	zfs(8) set sharenfs supports sec keyword,
	periodic(8) script for zfs scrub added,
	tzdata2010l,
	sysinstall(8) partition size changed, and
	sysinstall(8) enables getty on serial console when no VGA.

Approved by:	re (implicit)

git-svn-id: svn://svn.freebsd.org/base/releng/8.2@218363 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f