doc/go1.1.html: document the moving of exp/... and old/....
doc/go1.1.html: document the moving of exp/... and old/....

R=golang-dev, minux.ma
CC=golang-dev
https://codereview.appspot.com/7445050
abustany/go,abustany/go,abustany/go,abustany/go,abustany/go,abustany/go,abustany/go