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svn:author
V 7
asomers
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svn:date
V 27
2017-03-11T00:11:20.193114Z
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V 252
Increase WARNS for pw tests

ATF tests have a default WARNS of 0, unlike other usermode programs.

Reviewed by:  ngie, julian
MFC after:    3 weeks
Sponsored by: Spectra Logic Corporation
Differential Revision:        https://reviews.freebsd.org/D9933

END