misc/cgo/test: do not stop on first error
misc/cgo/test: do not stop on first error

R=golang-dev, bradfitz
CC=golang-dev
https://codereview.appspot.com/7529043

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