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emaste
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2016-07-25T19:37:10.519855Z
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Merge LLVM libunwind fixes

r302475: libunwind: limit stack usage in unwind cursor

This may be reworked upstream but in the interim should address the
stack usage issue reported in the PR.

r303061: libunwind: Properly align _Unwind_Exception.

_Unwind_Exception is required to be double word aligned.  GCC has
interpreted this to mean "use the maximum useful alignment for the
target" so follow that lead.

PR:		206384 (r302475)
Obtained from:	LLVM review D22543 (r303061)
Approved by:	re (gjb)

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