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

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@39476 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/common/wincmn.cpp

@@ -41,11 +41,8 @@
     #include "wx/statusbr.h"
     #include "wx/toolbar.h"
     #include "wx/dcclient.h"
-#endif //WX_PRECOMP
-
-#if defined(__WXMAC__) && wxUSE_SCROLLBAR
     #include "wx/scrolbar.h"
-#endif
+#endif //WX_PRECOMP
 
 #if wxUSE_CONSTRAINTS
     #include "wx/layout.h"