Automatic merge from submit-queue

local-up: Add option to guess binary path

This adds a `-O` flag which guesses the right output directory.

The reason for having two flags, not one, is because bash's `getopt` doesn't let you do optional arguments easily, so having both makes the code simpler.

I also removed the redundant empty check; the bash argument check meant that was never hit.

cc @jayunit100 and @jbeda (arbitrary people from the git log)