fix build: temporarily disable the use of strings.Reader UnreadRune in fmt
fix build: temporarily disable the use of strings.Reader UnreadRune in fmt

R=r
CC=golang-dev
http://codereview.appspot.com/4532090

h8liu/golang,h8liu/golang,h8liu/golang,h8liu/golang,h8liu/golang,h8liu/golang,h8liu/golang