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brooks
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2019-10-21T23:53:09.276391Z
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Update to a new snapshot.

powerpc64: add configure option to select ELFv2 ABI

In preparation for compiler+ABI change in PowerPC64, this change adds a
configure option to select ELFv2 as default powerpc64 ABI when compiling
llvm-devel.

The new option automatically set when ELFv2 environment is detected
(when PPC_ABI=ELFv2)

Submitted by:	Alfredo Dal'Ava Júnior
Differential Revision:	https://reviews.freebsd.org/D22100

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