Log Message:
-----------
Use a proper enum for tri-valued variables.
Modified Files:
--------------
pgsql/src/bin/scripts:
createuser.c (r1.22 -> r1.23)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/bin/scripts/createuser.c.diff?r1=1.22&r2=1.23)