William Lallemand e134041910 MINOR: don't close stdio anymore
Closing the standard IO FDs (0,1,2) can be troublesome, especially in
the case of the master-worker.

Instead of closing those FDs, they are now pointing to /dev/null which
prevents sending debugging messages to the wrong FDs.

This patch could be backported in 1.8.
2017-12-29 16:33:41 +01:00
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2017-12-29 16:33:41 +01:00
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