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asomers
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2017-08-25T14:37:23.378323Z
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MFC r321082:

Add regression tests for bugs 220459 and 220398

Bug 220398 - lio_listio(2) never sends asynchronous notification if nent==0
Bug 220459 - lio_listio(2) doesn't support SIGEV_THREAD

PR:		220459
PR:		220398
Reviewed by:	cem, jhb
Sponsored by:	Spectra Logic Corp
Differential Revision:	https://reviews.freebsd.org/D11470

END