FIX make pickle test pass with Python 3.5
FIX make pickle test pass with Python 3.5

lesteve/joblib,aabadie/joblib,karandesai-96/joblib,karandesai-96/joblib,tomMoral/joblib,joblib/joblib,lesteve/joblib,aabadie/joblib,joblib/joblib,tomMoral/joblib