Merging r354184:

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r354184 | ruiu | 2019-02-15 15:11:18 -0800 (Fri, 15 Feb 2019) | 10 lines

[PPC64] Preserve LocalEntry when linking

On PowerPC64, it is necessary to keep the LocalEntry bits in st_other,
especially when -r is used. Otherwise, when the resulting object is used
in a posterior linking, LocalEntry info will be unavailable and
functions may be called through the wrong entrypoint.

Patch by Leandro Lupori.

Differential Revision: https://reviews.llvm.org/D56782
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llvm-svn: 361921