Include wx/msw/wrap*.h according to pch support (with other minor cleaning).

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@41054 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/common/appbase.cpp

@@ -25,6 +25,9 @@
 #endif
 
 #ifndef WX_PRECOMP
+    #ifdef __WXMSW__
+        #include  "wx/msw/wrapwin.h"  // includes windows.h for MessageBox()
+    #endif
     #include "wx/list.h"
     #include "wx/app.h"
     #include "wx/intl.h"
@@ -43,10 +46,6 @@
   #include  <signal.h>      // for SIGTRAP used by wxTrap()
 #endif  //Win/Unix
 
-#if defined(__WXMSW__)
-  #include  "wx/msw/wrapwin.h"  // includes windows.h for MessageBox()
-#endif
-
 #if wxUSE_FONTMAP
     #include "wx/fontmap.h"
 #endif // wxUSE_FONTMAP