Include wx/radiobut.h according to precompiled headers of wx/wx.h (with other minor cleaning).

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@39567 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/common/containr.cpp

@@ -29,14 +29,11 @@
     #include "wx/event.h"
     #include "wx/window.h"
     #include "wx/scrolbar.h"
+    #include "wx/radiobut.h"
 #endif //WX_PRECOMP
 
 #include "wx/containr.h"
 
-#ifdef __WXMSW__
-    #include "wx/radiobut.h"
-#endif
-
 // trace mask for focus messages
 #define TRACE_FOCUS _T("focus")