doc: Update documentation of pam_winbind krb5 support.
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Guenther Deschner <gd@samba.org>
Autobuild-User(master): Günther Deschner <gd@samba.org>
Autobuild-Date(master): Tue Sep 10 15:35:20 CEST 2013 on sn-devel-104
The last 3 patches address bug #10132 - pam_winbindd should support the KEYRING
ccache type.
Autobuild-User(v4-1-test): Karolin Seeger <kseeger@samba.org>
Autobuild-Date(v4-1-test): Mon Oct 7 12:21:29 CEST 2013 on sn-devel-104