Hello (cc: golang-codereviews@googlegroups.com), I'd like you to review this change to https://code.google.com/p/go/
*** Submitted as https://code.google.com/p/go/source/detail?r=dccacf23dfff *** doc: add go1.4.txt CC=golang-codereviews https://codereview.appspot.com/103340046