Patch: System keytab usage improvements

[Jeremy Allison]

Hi Dan and all who wanted the system keytab code
in 3.0.5 - it's in SVN. If you could check it out and
test it I'd appreciate it.

One change, you must turn it on by adding :

use kerberos keytab = yes

in the [global] section of your smb.conf.

Cheers,

	Jeremy.