1. Added Clipboard and Drag-and-Drop classes
2. Added wxFontEnumerator
3. Many changes to wxMenu, wxMenubar
4. Various other changes and additions
5. Updates to the demo
6. Documentation updates
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@4387 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775