Patch for jail.8 to remove references to sysinstall which is not part of Dragonfly

[Tomaž Borštnar <tomaz.borstnar@xxxxxxxx>]

Here is small patch to fix references to sysinstall which is not part of 
Dragonfly.

Tomaž
*** /usr/src/usr.sbin/jail/jail.8	Thu Mar 11 13:28:59 2004
--- jail.8	Mon Sep 27 00:43:04 2004
***************
*** 181,204 ****
  As
  with any machine (virtual or not) you will need to set a root password, time
  zone, etc.
- Before beginning, you may want to copy
- .Xr sysinstall 8
- into the tree so that you can use it to set things up easily.
- Do this using:
- .Bd -literal -offset indent
- mkdir /data/jail/192.168.11.100/stand
- cp /stand/sysinstall /data/jail/192.168.11.100/stand
- .Ed
  .Pp
  Now start the jail:
  .Pp
  .Dl "jail /data/jail/192.168.11.100 testhostname 192.168.11.100 /bin/sh"
  .Pp
  You will end up with a shell prompt, assuming no errors, within the jail.
! You can now run
! .Pa /stand/sysinstall
! and do the post-install configuration to set various configuration options,
! or perform these actions manually by editing
  .Pa /etc/rc.conf ,
  etc.
  .Pp
--- 181,194 ----
  As
  with any machine (virtual or not) you will need to set a root password, time
  zone, etc.
  .Pp
  Now start the jail:
  .Pp
  .Dl "jail /data/jail/192.168.11.100 testhostname 192.168.11.100 /bin/sh"
  .Pp
  You will end up with a shell prompt, assuming no errors, within the jail.
! You can now do the post-install configuration to set various configuration
! options by editing
  .Pa /etc/rc.conf ,
  etc.
  .Pp