Merging r243633:

Merging r243633:
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r243633 | dsanders | 2015-07-30 11:14:57 +0100 (Thu, 30 Jul 2015) | 11 lines

[test-release.sh] Add -no-libunwind to disable it on targets that don't support it.

Summary:
Mips doesn't implement unw_getcontext() or libunwind::Registers_*::jumpto() yet
so we must disable libunwind for this release.

Reviewers: hans

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D11563
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_37@243634 91177308-0d34-0410-b5e6-96231b3b80d8