Avoid warning when there is no accelerator in the menu item text, or use GetAccelString if it has been set.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxPython/Phoenix/trunk@78298 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Add missing virtuals to fix GUIEventLoop to not be an abstract class

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxPython/Phoenix/trunk@78299 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Fix event loop usage, but comment for now because it is hanging the tests

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxPython/Phoenix/trunk@78300 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Add a readme for the snapshots folder, don't delete it when uploading new snapshot builds

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxPython/Phoenix/trunk@78301 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
More pubsub unittest fixes

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxPython/Phoenix/trunk@78302 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775