Fix shutdown issues.#179

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marsupial wants to merge 3 commits intoroot-project:masterfrom

marsupial:PR/24

Commits on Jul 12, 2017

Fix destruction ordering on shutdown.
marsupial
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Commits on Jul 13, 2017

Windows: Fix DeRegisterEHFrames from erasing a possibly invalid iterator.
marsupial
committed

Commits on Jul 27, 2017

Windows: Fix exception handling frames not being registered.
marsupial
committed