encoding/gob: add test case for issue 4214. See http://code.google.com/p/go/issues/detail?id=4214
encoding/gob: add test case for issue 4214.
See http://code.google.com/p/go/issues/detail?id=4214

R=golang-dev, r
CC=golang-dev
http://codereview.appspot.com/6619068
abustany/go,abustany/go,abustany/go,abustany/go,abustany/go,abustany/go,abustany/go