COMPAT: compat with released numpy 1.11 for IndexError -> TypeError
was a revert of # https://github.com/numpy/numpy/pull/6271

closes #12729
closes #12792 

waiting for `numpy==1.11.0` to be live in conda for proper testing, as we don't want to add a pip only build (as we are already testing from numpy master, which worked, except for this case where the version determination changed after we put our fix in).
