Ignore the GetFirst/GetNext methods in wx.FileConfig so it will use the custom ones in wx.ConfigBase instead.

git-svn-id: http://svn.wxwidgets.org/svn/wx/wxPython@73813 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Set the log target to use stderr so it won't try making log dialogs while tests are running (and the UI might not be in enough of a fully initialized state for them to work without asserting or crashing.)

git-svn-id: http://svn.wxwidgets.org/svn/wx/wxPython@73814 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775