CVS HEAD psql won't let you out of a Password: prompt

If psql wants a Password:, it won't gracefully give up in response to
^C, ^D, or ^J ... you *must* enter a nonempty string before you can get
your console back.  This is pretty unfriendly, and I don't recall prior
versions behaving that way (though I so seldom use a password with PG
that I might be wrong).
        regards, tom lane