Backed out 2 changesets (bug 1470510) for build bustage on /build/src/widget/cocoa/nsChildView.mm. CLOSED TREE

Backed out changeset 5967bf633574 (bug 1470510)
Backed out changeset 067a556bb614 (bug 1470510)

--HG--
rename : xpfe/appshell/nsIAppWindow.idl => xpfe/appshell/nsIXULWindow.idl
rename : xpfe/appshell/AppWindow.cpp => xpfe/appshell/nsXULWindow.cpp
rename : xpfe/appshell/AppWindow.h => xpfe/appshell/nsXULWindow.h
extra : amend_source : 752d828c6a0726c3f2df57a25741e38b36b75d6b