Fix deadlock when indirectly calling PLCObject's evaluator() from twisted of wx event loops. Was freezing while transfer/start/stop through Wamp. Serialize all PLCObject's call to self.PythonRuntimeCall into the same PythonThread thread.

from __future__ import absolute_import

from etherlab.etherlab import *
from util.BitmapLibrary import AddBitmapFolder
import util.paths as paths

AddBitmapFolder(os.path.join(paths.AbsDir(__file__), "images"))