go: update to go 1.2.1
go: update to go 1.2.1

keymon/basebuilder,ChangjunZhao/basebuilder,leandrosouza/basebuilder,keymon/basebuilder,keymon/basebuilder,marcuskara/basebuilder,emerleite/basebuilder,marcuskara/basebuilder,jusbrasil/basebuilder,keymon/basebuilder,jusbrasil/basebuilder,actionjack/basebuilder,actionjack/basebuilder,leandrosouza/basebuilder,tsuru/basebuilder,axelerant/basebuilder,keymon/basebuilder,ChangjunZhao/basebuilder,axelerant/basebuilder,leandrosouza/basebuilder,marcuskara/basebuilder,actionjack/basebuilder,emerleite/basebuilder,keymon/basebuilder,keymon/basebuilder,tsuru/basebuilder,keymon/basebuilder,ChangjunZhao/basebuilder,axelerant/basebuilder,emerleite/basebuilder,jusbrasil/basebuilder