getopt bug

We had a fixed version of getopt() that would properly warn users that
they compiled psql without long options on systems with buggy getopt's,
like FreeBSD.

Now that I have added a search for libgetopt.a, which may find
getopt_long on those platforms, I have removed utils/getopt.c. No
modules were using it anyway.

-- 
  Bruce Momjian                        |  http://candle.pha.pa.us
  pgman@candle.pha.pa.us               |  (610) 853-3000
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