pgsql: -- email subject limit -----------------------------------------

-- email subject limit -----------------------------------------
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pg_upgrade:  reorder controldata checks to match program output

Also improve comment for how float8_pass_by_value is used.

Backpatch through 9.5

Branch
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REL9_5_STABLE

Details
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http://git.postgresql.org/pg/commitdiff/41179e7ab328a12870fed942768a89dbe8742bf1

Modified Files
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src/bin/pg_upgrade/controldata.c |   74 ++++++++++++++++++++------------------
1 file changed, 39 insertions(+), 35 deletions(-)