Added #include "wx/utils.h" to make it compile for wxBase under Unix

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@13765 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/common/appcmn.cpp

@@ -41,6 +41,7 @@
 #include "wx/thread.h"
 #include "wx/confbase.h"
 #include "wx/tokenzr.h"
+#include "wx/utils.h"
 
 #if !defined(__WXMSW__) || defined(__WXMICROWIN__)
   #include  <signal.h>      // for SIGTRAP used by wxTrap()