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svn:author
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gnn
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svn:date
V 27
2016-12-20T16:37:45.806373Z
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svn:log
V 133
MFC: 309069

Add tunable to disable destructive dtrace

Submitted by:	Joerg Pernfuss <code.jpe@gmail.com>
Reviewed by:	rstone, markj

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