C: add Tobias Columbus's email used in Rietveld
C: add Tobias Columbus's email used in Rietveld

R=golang-dev, tobias.columbus, bradfitz
CC=golang-dev
http://codereview.appspot.com/6483058
abustany/go,abustany/go,abustany/go,abustany/go,abustany/go,abustany/go,abustany/go