pull up r22038 from trunk

 ticket: 6398
 subject: remove obsolete GNU.ORG realm info
 target_version: 1.7
 tags: pullup

 Our sample krb5.conf has obsolete info on the GNU.ORG realm; the DNS
 entries named don't exist, and AFAIK this hasn't been accurate in
 years.  (I don't even know if they're currently running a Kerberos
 realm.)

https://github.com/krb5/krb5/commit/a48a5e9b40e956d8ec268bb577812fb3f5af5877
Commit By: tlyu
Revision: 22202
Changed Files:
U   branches/krb5-1-7/src/config-files/krb5.conf