Apply patchm requested by gson in ticket #963:
sys/arch/x86/pci/pci_machdep.c			1.61 via patch

	Force PCI mode 1 when running under QEMU, to work around
	QEMU bug 897771.
	This should also make it possible to boot NetBSD under versions of KVM
	that have inherited said QEMU bug.  Fixes PR kern/45671.
Pull up following revision(s) (requested by spz in ticket #967):
	sys/netinet/tcp_usrreq.c: revision 1.168
PR/48098: Brian Marcotte: Avoid kernel assertion for embryonic sockets that
don't have credentials yet.
XXX: pullup-6
Pull up following revision(s) (requested by martin in ticket #971):
	external/mit/xorg/server/drivers/xf86-video-intel/Makefile: revision 1.11
Add missing i810_dri.c file to SRCS.
PR xsrc/48315.
Pull up following revision(s) (requested by tsutsui in ticket #972):
	distrib/utils/sysinst/mbr.c: revision 1.92
Fix another botch of my dumb patch in PR/45990; add missing braces.
The offset of MBR partition 0 was unintentionally set to 2048 even on
small (<=128GB) disks.  Probably we should rethink the threshold,
but anyway sysinst(8) should follow fdisk(8) default.
http://nxr.NetBSD.org/xref/src/sbin/fdisk/fdisk.c?r=1.145#1199
http://cvsweb.NetBSD.org/bsdweb.cgi/src/sbin/fdisk/fdisk.c#rev1.129
The problem is pointed out and analyzed by Simon Nicolussi in PR/48304.
Should be pulled up to all netbsd-6* branches.
Tickets 963, 967, 971, 972