BUG: Writing an Exodus file in parallel segfaults.

This happens when data is only on a node.

Change-Id: Id03fb63e46593f2e9ca24180c6091dace64df7f5
Stop all processes if one process stops.

If running in parallel and saving multiple time steps, if one
process stops executing all processes stop.

Change-Id: I1fee5599a1acaad230235db421961f602a3e342e
Merge topic '14539-can-crash' into master

b45e6b63 Stop all processes if one process stops.
699deb91 BUG: Writing an Exodus file in parallel segfaults.