preparation for allowing to use wxTimer in wxBase (heavily modified patch 1113088):

1. Changed wxTimer to use wxTimerImpl
2. Added Unix-specific generic timer implementation
3. Added wxAppTraits::CreateTimerImpl()


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@45544 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/os2/utilsgui.cpp

@@ -33,6 +33,7 @@
 #endif //WX_PRECOMP
 
 #include "wx/apptrait.h"
+#include "wx/os2/private/timer.h"
 
 #include "wx/os2/private.h"     // includes <windows.h>
 
@@ -261,6 +262,11 @@ wxPortId wxGUIAppTraits::GetToolkitVersion(int *verMaj, int *verMin) const
     return wxPORT_OS2;
 }
 
+wxTimerImpl* wxGUIAppTraits::CreateTimerImpl(wxTimer *timer)
+{
+    return new wxOS2TimerImpl(timer);
+}
+
 
 // ---------------------------------------------------------------------------
 // window information functions