Let pylint use as many CPUs as available

.pylintrc

@@ -18,7 +18,8 @@ persistent=no
 load-plugins=
 
 # Use multiple processes to speed up Pylint.
-jobs=1
+# Zero means use the total number of CPUs.
+jobs=0
 
 # Allow loading of arbitrary C extensions. Extensions are imported into the
 # active Python interpreter and may run arbitrary code.