7.3 stamped

I have rebuild HISTORY to add recent release.sgml changes, and have
stamped configure/configure.in for 7.3.

Marc, if you can, please create the 7.3 tarball tonight so the mirrors
will be ready tomorrow. Thanks.

-- 
  Bruce Momjian                        |  http://candle.pha.pa.us
  pgman@candle.pha.pa.us               |  (610) 359-1001
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