Bug 851964 - Re-enable OdinMonkey on OSX (r=vlad)

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extra : rebase_source : aff0da8d3695b7327d2daa367ce01f7766e38200
Bug 842166 - Ignore MaybeEditingStateChanged() during nsDocument::EndUpdate since nsHTMLDocument::EndUpdate will do it.  r=ehsan
Bug 842166 - Block scripts during nsGfxScrollFrameInner::ReflowFinished().  r=ehsan