vfs/mount/rs/service changes:

. changed umount() and mount() to call 'service', so that it can include
   a custom label, so that umount() works again (RS slot gets freed now).
   merged umount() and mount() into one file to encode keep this label
   knowledge in one file.
 . removed obsolete RS_PID field and RS_RESCUE rescue command
 . added label to RS_START struct
 . vfs no longer does kill of fs process on unmount (which was failing
   due to RS_PID request not working)
 . don't assume that if error wasn't one of three errors, that no error
   occured in vfs/request.c
mfs changes:
 . added checks to copy statements to truncate copies at buffer sizes
   (left in debug code for now)
 . added checks for null-terminatedness, if less than NAME_MAX was copied
 . added checks for copy function success
is changes: 
 . dump rs label
drivers.conf changes:
 . added acl for mfs so that mfs can be started with 'service start',
   so that a custom label can be provided

docs/UPDATING

@@ -31,3 +31,6 @@
 	in /etc/make.conf, included by some Makefiles and sourced by
 	some shell scripts. To install it, type 'make install' in
 	src/etc, or simply copy the file over.
+20070118:
+	drivers.conf has been updated to include an ACL for mfs. it has
+	to be installed before rebooting after an update of the mount command.