e - fix xdg runtime dir creation withotu deletion
e - fix xdg runtime dir creation withotu deletion

this fixes T1366 - uses tmp dot file in xdg dir to mark it for
deletion to survive e restarts and crashes.

tasn/enlightenment,FlorentRevest/Enlightenment,tasn/enlightenment,FlorentRevest/Enlightenment,tizenorg/platform.upstream.enlightenment,rvandegrift/e,tizenorg/platform.upstream.enlightenment,rvandegrift/e,tasn/enlightenment,tizenorg/platform.upstream.enlightenment,FlorentRevest/Enlightenment,rvandegrift/e