pg_upgrade and extra_float_digits

FYI, I test pg_upgrade by loading the old cluster's regression database
from a pg_dump output file, then after the upgrade, I dump the
regression database of the new cluster and diff the changes.

The problem I just encountered is that pg_dump uses
extra_float_digits=-3 for 9.0, while previous releases used '2'.  I had
to do hack each server version to get a dump output that would match
without rounding errors --- it did eventually work and validated.

-- 
  Bruce Momjian  <bruce@momjian.us>        http://momjian.us
  EnterpriseDB                             http://enterprisedb.com