Don't use -static-stdlib for bootstrap

Do this from the self-host test for atbuild
5 jobs for master
Status Job ID Name Coverage
  Build
passed #3128
autoscale-linux
linux

00:01:26

passed #3132
openswift
osx

00:02:52

passed #3129
openswift
osx

00:00:41

failed #3130
openswift
osx

00:00:11

failed #3131
openswift
osx

00:00:01