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

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@38945 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/common/gdicmn.cpp

@@ -17,7 +17,7 @@
 #include "wx/wxprec.h"
 
 #ifdef __BORLANDC__
-#pragma hdrstop
+    #pragma hdrstop
 #endif
 
 #include "wx/gdicmn.h"
@@ -25,6 +25,7 @@
 #ifndef WX_PRECOMP
     #include "wx/log.h"
     #include "wx/event.h"
+    #include "wx/app.h"
 #endif
 
 #include "wx/brush.h"
@@ -34,7 +35,6 @@
 #include "wx/cursor.h"
 #include "wx/font.h"
 #include "wx/palette.h"
-#include "wx/app.h"
 #include "wx/dc.h"
 #include "wx/utils.h"
 #include "wx/settings.h"