A+C: Ulf Holm Nielsen (individual CLA)

Generated by addca.

R=gobot
CC=golang-dev
https://codereview.appspot.com/12146043
time: Allow Parse and Format to handle time zone offsets with seconds

Adds layout cases with seconds for stdISO8601 and stdNumTZ with and without colons. Update time.Format to append seconds for those cases.

Fixes issue 4934.

R=golang-dev, r, bradfitz
CC=golang-dev
https://codereview.appspot.com/8132044

Committer: Rob Pike <r@golang.org>
fmt: make all errors begin with the string "%!", always.

Fixes Issue 5730.

R=dsymonds, r, kamil.kisiel
CC=golang-dev
https://codereview.appspot.com/11998044

Committer: Rob Pike <r@golang.org>