Log Message:
-----------
Since GSSAPI and SSPI authentication don't work in protocol version 2,
issue a helpful error message instead of sending unparsable garbage.
(It is clearly a design error that this doesn't work, but fixing it
is not worth the trouble at this point.) Per discussion.
Modified Files:
--------------
pgsql/src/backend/libpq:
auth.c (r1.163 -> r1.164)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/libpq/auth.c?r1=1.163&r2=1.164)