Made the spawner more streamlined, and allowed the @spawn command to access prototypes in a file specified by the optional PROTOTYPE_MODULES setting.

src/utils/utils.py

@@ -792,6 +792,8 @@ def all_from_module(module):
     Return all global-level variables from a module as a dict
     """
     mod = mod_import(module)
+    if not mod:
+        return {}
     return dict((key, val) for key, val in mod.__dict__.items()
                             if not (key.startswith("_") or ismodule(val)))