Merging r370035:

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r370035 | devnexen | 2019-08-27 12:04:03 +0200 (Tue, 27 Aug 2019) | 7 lines

[ReleaseNotes] MemorySanitizer support of ASLR on FreeBSD

Reviewers: sylvestre.ledru, kcc

Reviewed By: sylvestre.ledru

Differential Revision: https://reviews.llvm.org/D66792
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llvm-svn: 370213