golang14: do not run tests on build

On some machines, net:TestDialTimeout never passes and today, Go 1.4 is only
used for bootstrapping, so let's not be more clever than Go devs, who
explicitly state to use make.bash

See also https://github.com/golang/go/issues/18954

component/golang/buildout.cfg

@@ -29,6 +29,7 @@ revision = go1.4.3-16-g4d5426a
 <= golang-common
 path = ${golang14-repository:location}
 environment-extra =
+make-targets= cd src && ./make.bash && cp -alf .. ${:location}
 
 
 [golang18]