added want global managers

direct/src/showbase/ShowBase.py

@@ -239,6 +239,7 @@ class ShowBase(DirectObject.DirectObject):
         __builtins__["pandaSystem"] = PandaSystem.getGlobalPtr()
         __builtins__["__dev__"] = base.config.GetBool('want-dev', 0)
         __builtins__["wantOtpServer"] = base.config.GetBool('want-otp-server', 0)
+        __builtins__["wantGlobalManagers"] = base.config.GetBool("want-global-managers", 0)
         if __debug__:
             __builtins__["deltaProfiler"] = DeltaProfiler.DeltaProfiler("ShowBase")
         __builtins__["onScreenDebug"] = OnScreenDebug.OnScreenDebug()