atexit() hook to report info about failure conditions

[PhilMiller]

Current behavior

If a formulation calls exit(), abort(), STOP, or similar, the job just stops, with no clear report of what formulation failed or where.

Expected behavior

The framework should keep track of what formulation is running and what catchment it's running on. An atexit() hook should print the contents of those variables in the event of an unexpected early exit