message: drake.Module: Add default to get.
diff: @@ -2706,13 +2706,15 @@ class _Module:
  def __init__(self, globals):
  self.globals = globals
  - def __getattr__(self, name):
  + def __getattr__(self, name, default = None):
  + return self.globals.get(name, default)
  +
  + def __getitem__(self, name):
  return self.globals[name]
  def __contains__(self, key):
  return key in self.globals
  -
  def include(path, *args, **kwargs):
  """Include a sub-drakefile.
  