1. status bar can now be positioned on top (and anywhere, in fact)

1. status bar can now be positioned on top (and anywhere, in fact)
2. status bar without wxST_SIZEGRIP style won't have the size grip (wow)
3. scrollbars don't get the cursor of the main window any more
4. introduced wxSetCursorEvent and use it in wxSplitterWindow

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@6665 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775