pg_upgrade

Tom asked about pg_upgrade as part of our initdb for timezone.

I have made some improvements to pg_upgrade in CVS and have successfully
migrated a regression database from a 7.2 to another 7.2 database using
it.  (At least the tables show some data;  very light testing.)

pg_upgrade is still disabled in CVS, it doesn't install, and there is no
manual page so it is still an unused command. I have made the commit so
people can review where I have gone and make comments.

To test it, you have to find the line that says 7.2 and remove the '#'
comment.  This is for testing purposes only, so far.

--  Bruce Momjian                        |  http://candle.pha.pa.us pgman@candle.pha.pa.us               |  (610)
853-3000+  If your life is a hard drive,     |  830 Blythe Avenue +  Christ can be your backup.        |  Drexel Hill,
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