small fixes and cleanups

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@5286 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

utils/wxPython/src/_defs.i

@@ -23,6 +23,7 @@ class wxBitmap;
 class wxBrush;
 class wxButton;
 class wxCalculateLayoutEvent;
+class wxCaret;
 class wxCheckBox;
 class wxCheckListBox;
 class wxChoice;