lib/godoc/godoc.html: try Google hosted jQuery first, fallback to locally hosted one
lib/godoc/godoc.html: try Google hosted jQuery first, fallback to locally hosted one

R=golang-dev, adg
CC=golang-dev
http://codereview.appspot.com/6593078
abustany/go,abustany/go,abustany/go,abustany/go,abustany/go,abustany/go,abustany/go