Pull up following revision(s) (requested by hannken in ticket #49):
	sys/ufs/ext2fs/ext2fs_vfsops.c: revision 1.184
Use mount from argument "mp", "vp->v_mount" is not valid here.
PR kern/49142 (panic in ext2fs_loadvnode mounting an ext2fs filesystem)
Ticket 49
Pull up following revision(s) (requested by martin in ticket #39):
	usr.sbin/sysinst/main.c: revision 1.4
	usr.sbin/sysinst/disks.c: revision 1.5
	usr.sbin/sysinst/main.c: revision 1.5
	usr.sbin/sysinst/mbr.c: revision 1.3
	usr.sbin/sysinst/net.c: revision 1.3
	usr.sbin/sysinst/net.c: revision 1.4
	usr.sbin/sysinst/partman.c: revision 1.5
	usr.sbin/sysinst/partman.c: revision 1.6
	usr.sbin/sysinst/util.c: revision 1.4
Remove duplicate fclose(), pointed out by coverity scan.
Remove (accidently) duplicated code - pointed out by coverity scan.
Make sure the interface name is 0 terminated, pointed out by coverity scan.
Check return value from getenv() before using the value. Pointed out by
coverity scan.
Make an invariant more clear to avoid fals positives from coverity scan
if chdir() fails, try chdir /
Check return values from stat before comparing contents of the result
structures. Pointed out by coverity scan.
Cosmetic changes trying to appease coverity scan.
Make sure to not dereference a NULL pointer.
Pull up following revision(s) (requested by nakayama in ticket #50):
	sys/dev/isa/ess.c: revision 1.81
	sys/dev/isa/ess.c: revision 1.82
	sys/dev/isa/essvar.h: revision 1.27
	sys/dev/isa/essreg.h: revision 1.17
Remove redundant colon.
Add support for Spatializer, 3D audio effects embedded in ES1869
and ES1879 to ess(4).
Tested on my old laptop, mobio NX.
Tickets 39, 50.