Merge pull request #3105 from RosettaCommons/vmullig/goto_killer
Remove a bunch of unnecessary gotos.
The only gotos remaining in Rosetta after this are in pilot apps (which we won't touch) and in `numeric/linear_algebra/rgg.cc` (which is an incomprehensible mess of gotos that nobody will ever dare to change).
<img src="https://imgs.xkcd.com/comics/goto.png" />