Bug 937461.  Make cloneNode/importNode "deep" arg default to false, since the spec changed on us.  r=sicking
Bug 949890.  Fix rooting hazard in workers::XMLHttpRequest::Send.  r=khuey
Bug 951245.  Forwarding to outer should check for active document, not current inner, to handle document.open() cases.  r=peterv
Bug 952375.  Include headers for external interfaces in UnionConversions.h.  r=dzbarsky