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

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@39787 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/os2/frame.cpp

@@ -31,14 +31,13 @@
     #include "wx/mdi.h"
     #include "wx/toolbar.h"
     #include "wx/statusbr.h"
+    #include "wx/menuitem.h"
 #endif // WX_PRECOMP
 
 #include "wx/os2/private.h"
 
 #include "wx/generic/statusbr.h"
 
-#include "wx/menuitem.h"
-
 // ----------------------------------------------------------------------------
 // globals
 // ----------------------------------------------------------------------------

src/os2/ownerdrw.cpp

@@ -23,11 +23,10 @@
     #include "wx/menu.h"
     #include "wx/utils.h"
     #include "wx/settings.h"
+    #include "wx/menuitem.h"
 #endif
 
 #include "wx/ownerdrw.h"
-#include "wx/menuitem.h"
-
 
 // ============================================================================
 // implementation of wxOwnerDrawn class

src/os2/window.cpp

@@ -47,6 +47,7 @@
     #include "wx/intl.h"
     #include "wx/log.h"
     #include "wx/textctrl.h"
+    #include "wx/menuitem.h"
     #include <stdio.h>
 #endif
 
@@ -58,8 +59,6 @@
     #include "wx/dnd.h"
 #endif
 
-#include "wx/menuitem.h"
-
 #include "wx/os2/private.h"
 
 #if wxUSE_TOOLTIPS