Log Message:
-----------
Update GUC description for kerberos usernames.
Modified Files:
--------------
pgsql/src/backend/utils/misc:
guc.c (r1.266 -> r1.267)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/misc/guc.c.diff?r1=1.266&r2=1.267)