doc/go1.1.html: add links to the text, write some new sections
doc/go1.1.html: add links to the text, write some new sections

R=golang-dev, rsc, dave
CC=golang-dev
https://codereview.appspot.com/7914043
abustany/go,abustany/go,abustany/go,abustany/go,abustany/go,abustany/go,abustany/go