+- wxBookCtrl renamed to wxBookCtrlBase, wxBookCtrl is reserved for most native
+ book control (for now wxChoicebook for MSSmartphone, wxNotebook for others).
+ Necessary event macros, types and styles mapped accordingly.
+- new wxBrush::IsHatch() checking for brush type replaces IS_HATCH macro
+- wxProgressDialog accepts smooth gauge again (wxPD_SMOOTH style)
+- wxProgressDialog new style: wxPD_CAN_SKIP which provides skipping some parts
+ of the progress (with new "Skip" button in dialog)