Thread: pgsql: In pg_upgrade, document why we can't issue \n\n in the command l

In pg_upgrade, document why we can't issue \n\n in the command logfile
on Windows.  Slightly cleanup log output on Windows given this
restriction.

Backpatch to 9.2.

Branch
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master

Details
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http://git.postgresql.org/pg/commitdiff/022cd22f0fa39f3446b7aa31a72170f160e1a905

Modified Files
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contrib/pg_upgrade/exec.c       |   14 ++++++++++----
contrib/pg_upgrade/pg_upgrade.h |    6 +++++-
2 files changed, 15 insertions(+), 5 deletions(-)