Fix pgtest to return proper error code based on 'make' return code.

Branch
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master

Details
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http://git.postgresql.org/pg/commitdiff/99ed473acb47cb0cda47032e3d2392beca569d59

Modified Files
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src/tools/pgtest |    7 +++++++
1 files changed, 7 insertions(+), 0 deletions(-)

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Next:	From: Bruce Momjian	Date: 2012-08-10 20:46:33
	Subject: pgsql: Adjust pgtest coding to be less complex.
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	Subject: pgsql: Centralize the logic for detecting misplaced aggregates,window