exp/norm: API for normalization library.
exp/norm: API for normalization library.

R=r, r, mpvl, rsc
CC=golang-dev
http://codereview.appspot.com/4678041

Committer: Rob Pike <4dc7c9ec434ed06502767136789763ec11d2c4b7@golang.org>
abustany/go,abustany/go,abustany/go,abustany/go,abustany/go,abustany/go,abustany/go