[auton-users] OS X build

[Dan Pelleg]

I'm trying to debug a build problem for h/kmeans for a user using Apple's
OS X. I don't have such a machine, and to the best of my knowledge the lab
does not have an OS X build/test machine. I'd appreciate it if you use OS
X, and can spend 5 minutes looking at the report. If it's still a mystery
I'll ask you to give me an account on your machine so I can test it
further.

--Dan