Update from r343 of pubsub trunk/src/pubsub on SF.net

git-svn-id: http://svn.wxwidgets.org/svn/wx/wxPython@75300 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Update from r343 of pubsub trunk/src/pubsub on SF.net

git-svn-id: http://svn.wxwidgets.org/svn/wx/wxPython@75301 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775