Thread: pgsql: pg_upgrade: fix -j race condition on Windows

pg_upgrade: fix -j race condition on Windows
Pg_Upgrade cannot write the command string to the log file and then call
system() to write to the same file without causing occasional file-share
errors on Windows.  So instead, write the command string to the log file
after system(), in those cases.
Backpatch to 9.3.

Branch
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REL9_3_STABLE

Details
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http://git.postgresql.org/pg/commitdiff/d83940a7f60f48292b3ae58dfda81b146eab1c50

Modified Files
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contrib/pg_upgrade/exec.c |   46 ++++++++++++++++++++++++++++++++++++++++-----
1 file changed, 41 insertions(+), 5 deletions(-)