goprotobuf: update weekly tag. weekly tag now weekly.2011-04-13
goprotobuf: update weekly tag.
weekly tag now weekly.2011-04-13

R=bradfitzgo
CC=golang-dev
http://codereview.appspot.com/4437056

andrewzeneski/goprotobuf,VividCortex/goprotobuf,go-mirrors/goprotobuf