Adjust pgtest coding to be less complex.

Branch
------
master

Details
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http://git.postgresql.org/pg/commitdiff/914b1301cc7b4c1ffba9f4c037e6e76f8e787e05

Modified Files
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src/tools/pgtest |   27 ++++++++++++++-------------
1 files changed, 14 insertions(+), 13 deletions(-)

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