Prepare for NetBSD-5.0 release by adding the relevant files.
Welcome to NetBSD 5.0_BETA
Set doc-operating-system and doc-default-operating-system
Fix thinko on my part - operating system is "NetBSD-5.0_BETA", not "NetBSD-5.0".
Zap contents and start the list of changes leading up to the release.
Pull up following revision(s) (requested by cliff in ticket #2):
	sys/arch/arm/gemini/obio_wdt.c: revision 1.2
in geminiwdt_attach, put watchdog device in known (disabled) state,
then register this driver with sysmon_wdog_register.
rip out temp debug stuff from bringup.
Pull up following revision(s) (requested by cliff in ticket #2):
	distrib/evbarm/instkernel/instkernel/Makefile: revision 1.14
add GEMINI_INSTALL memory disk set target
Pull up following revision(s) (requested by cliff in ticket #2):
	distrib/evbarm/gzboot/gzimg/Makefile: revision 1.20
add GEMINI gz image target
Ticket 2.
Pull up following revision(s) (requested by tsutsui in ticket #4):
	etc/etc.cobalt/MAKEDEV.conf: revision 1.10
Create bpf(4) device node on ramdisk for sysinst.
Ticket 4.
Pull up following revision(s) (requested by reinoud in ticket #5):
	sys/kern/vfs_dirhash.c: revision 1.5
Cleanup dirhash and make use of the standard hash32_strn() instead of the
handcrafted one.
Note it uses hash32_strn() since arguments can be passed from namei
arguments and thus don't have to be null terminated.
Pull up following revision(s) (requested by reinoud in ticket #5):
	sys/kern/vfs_dirhash.c: revision 1.6
Remove old KASSERTS that were commented out. Since the dirhash structure is
considered part of the vnode/*_node structure it sure has to be locked or
the code using it is playing russian roulette.
Pull up following revision(s) (requested by reinoud in ticket #5):
	sys/kern/vfs_dirhash.c: revision 1.7
Protect the dirhash_queue when purging hashed directories on memory
overflow situations.
Pull up following revision(s) (requested by reinoud in ticket #5):
	sys/kern/vfs_dirhash.c: revision 1.8
Clarify the dirhash locking protocol and remove unnessiary #ifdef DEBUG
flag.
Ticket 5.
Pull up following revision(s) (requested by joerg in ticket #3):
	etc/etc.amd64/MAKEDEV.conf: revision 1.13
	etc/etc.i386/MAKEDEV.conf: revision 1.17
Create 4 Xen disks by default and all three Xen devices to make it
usable out-of-the-box.
Pull up following revision(s) (requested by joerg in ticket #3):
	etc/etc.amd64/MAKEDEV.conf: revision 1.14
	etc/etc.i386/MAKEDEV.conf: revision 1.18
Can't type. xkbd -> xbd.
Pull up following revision(s) (requested by joerg in ticket #3):
	etc/etc.amd64/MAKEDEV.conf: revision 1.15
	etc/etc.i386/MAKEDEV.conf: revision 1.19
Create 8 dk instances by default.
Ticket 3.