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

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@38920 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/univ/scrolbar.cpp

@@ -25,12 +25,13 @@
 
 #if wxUSE_SCROLLBAR
 
+#include "wx/scrolbar.h"
+
 #ifndef WX_PRECOMP
     #include "wx/timer.h"
-
     #include "wx/dcclient.h"
-    #include "wx/scrolbar.h"
     #include "wx/validate.h"
+    #include "wx/log.h"
 #endif
 
 #include "wx/univ/scrtimer.h"
@@ -38,7 +39,6 @@
 #include "wx/univ/renderer.h"
 #include "wx/univ/inphand.h"
 #include "wx/univ/theme.h"
-#include "wx/log.h"
 
 #define WXDEBUG_SCROLLBAR