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svn:author
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pkubaj
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svn:date
V 27
2020-08-09T20:41:27.815090Z
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svn:log
V 253
MFH: r544577

devel/abseil: fix build on powerpc64

sys/sysctl.h needs to be included after sys/types.h.
For once_flag, threads.h needs to be included.
For call_once, absl/base/call_once.h needs to be included.

Approved by:	portmgr (fix build blanket)

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