Out tests for features that didn't exist in old golang versions (like
gofmt didn't exist in 1.3 or the linker didn't want an = in 1.4) checked
for the new version. But this means every time there is a new version we
have to update the test. This PR inverts the test. We do it the old way
for the old version and if a new version comes along we just assume it
is going to work the new way.