Fixes for multithreaded execution#156

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jacquelinekay wants to merge 8 commits intomasterfrom

Commits on Nov 19, 2015

fix multithreaded error
Jackie Kay
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explicitly construct thread vector
Jackie Kay
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ospl intraprocess is still very buggy
Jackie Kay
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messy state
Jackie Kay
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small correction to exit condition in execute_any_executable
Jackie Kay
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constness, atomic counter in is_one_field_set
Jackie Kay
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guard condition mutex
Jackie Kay
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troubleshooting deadlock
Jackie Kay
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