A+C: Noah Campbell (individual CLA)

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R=gobot
CC=golang-dev
https://codereview.appspot.com/13261053
doc/go1.2.html: status of gccgo's support for 1.2

R=iant, minux.ma
CC=golang-dev
https://codereview.appspot.com/13669043
spec: define s[i:j:k]

R=rsc, r, iant, ken
CC=golang-dev
https://codereview.appspot.com/10243046