Pull up following revision(s) (requested by nonaka in ticket #161):
	sys/external/bsd/drm2/include/linux/sched.h: revision 1.4
Don't call kpause(9) if cold.
Pull up following revision(s) (requested by nonaka in ticket #162):
	sys/dev/pci/hdaudio/hdaudio_pci.c: revision 1.13
disestalish interrupt and unmap register when attach failed.
Tickets #161 and #162
Pull up following revision(s) (requested by maxv in ticket #163):
	sys/compat/linux/arch/i386/linux_ptrace.c: revision 1.29
	sys/compat/linux/arch/powerpc/linux_ptrace.c: revision 1.26
	sys/compat/linux/arch/powerpc/linux_ptrace.c: revision 1.27
Fix four memory leaks in compat/linux.
Pull up following revision(s) (requested by maxv in ticket #164):
	sys/dev/ieee1394/fwcrom.c: revision 1.15
	sys/dev/ieee1394/fwcrom.c: revision 1.16
	sys/dev/marvell/if_gfe.c: revision 1.43
	sys/dev/usb/stuirda.c: revision 1.16
	sys/dev/pci/cxgb/cxgb_offload.c: revision 1.4
	sys/dev/pci/twa.c: revision 1.51
	sys/dev/pci/twa.c: revision 1.52
Various fixes in dev/: remove dead code and fix two inconsistencies.
Pull up following revision(s) (requested by maxv in ticket #165):
	sys/arch/newsmips/stand/boot/netif_news.c: revision 1.9
	sys/arch/mvme68k/stand/installboot/installboot.c: revision 1.19
	sys/arch/arm/arm32/pmap.c: revision 1.300
	sys/arch/amiga/dev/siop2.c: revision 1.43
	sys/arch/amiga/amiga/disksubr.c: revision 1.62
	sys/arch/news68k/news68k/bus_space.c: revision 1.13
	sys/arch/amiga/dev/siop.c: revision 1.69
	sys/arch/x86/x86/x86_autoconf.c: revision 1.72
Remove dead code in various places under arch/.
Pull up following revision(s) (requested by maxv in ticket #166):
	sys/compat/netbsd32/netbsd32_compat_50.c: revision 1.28
fix multiple mistakes:
- error from copyout was ignored
- the wrong size was specified in copyin
- missing locking.
Pull up following revision(s) (requested by maxv in ticket #167):
	sys/arch/m68k/m68k/db_disasm.c: revision 1.41
fix cut-n-paste
Pull up following revision(s) (requested by nakayama in ticket #168):
	sys/arch/sparc64/sparc64/machdep.c: revision 1.280
Sync cpu_reboot with i386:
- avoid sync and unmount after panic.
- remove vfs_shutdown, we call vfs_sync_all and vfs_unmount* instead.
- resurrect doshutdownhooks since some drivers still use it (eg. sab(4)).
Pull up following revision(s) (requested by skrll in ticket #169):
	sys/arch/evbarm/imx23_olinuxino/imx23_olinuxino_machdep.c: revision 1.4
PR/48669 evbarm/imx23_olinuxino (ARM9E) doesn't boot.
Don't try to map all memory and fix booting.
Pull up following revision(s) (requested by manu in ticket #170):
	lib/libperfuse/ops.c: revision 1.77
Fix invalid free in deletextattr FUSE handler
Do not free FUSE message on error as it was not allocated.
Tickets #163 - #170
Pull up following revision(s) (requested by riz in ticket #171):
	sys/arch/x86/x86/identcpu.c: revision 1.46
	sys/arch/x86/x86/identcpu.c: revision 1.47
Force x86_xsave_features to 0 when running under XEN.
This prevents the use of xsave and xrstor thus fixing
the problem in PR/49150.  The basic problem is that the way AMD
implements those instructions means that information can leak
between domains so XEN treats them as privileged.
Ticket #171