Silent failure potential fix

[grantfirl]

Clunky fix for issue #135

[climbfuji]

@grantfirl any update on this one? Did I volunteer to try something and then forget it?

[grantfirl]

@grantfirl any update on this one? Did I volunteer to try something and then forget it?

The "fix" that I implemented here just notifies the user of the multi_run_gmtb_scm.py script if the word "error" shows up in the console output of the cases that it runs. So, the user will be notified of a non-zero exit code of the subprocesses OR the "error" string in the output. Definitely not ideal, but I don't have time to dig into why the run script returns a zero exit code for some errors and not others.

So, you can look at this PR and see if it is "good enough" for now or whether you think more time should be spent to fix it properly.

[grantfirl]

This has been implemented as part of the v5 release branch, which will get merged in from there. This can be closed.