tree e571d084cdccac41b348a39e05ee809f4eb3be07
parent f8880b334d1c68d45c24b3137a643b53261c2c7d
author Adam Sadovsky <asadovsky@gmail.com> 1456450833 -0800
committer Adam Sadovsky <asadovsky@gmail.com> 1456450833 -0800

jiri: gosh: switch from Logf/Fatalf to TB, and related

This change makes most of the changes described in the final
proposal in https://v.io/i/1128 - namely, it makes all the
requisite API changes.

Things not done in this change:
- "Good PC" logging
- Printing Cmd stdout/stderr on failure

Those will be done in subsequent changes.

MultiPart: 1/9

Change-Id: I46ee2a3532470d7ce13acec3243629662ae38845