1. wxWindowDisabler modified to bring parent window back to top under MSW

2. modal dialogs without parent now use the app top window as parent or use
   wxWindowDisabler if none
3. modal dialogs bring parent windows to top when activated
4. wxBase dsp will now compile it with MT CRT


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@6451 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/utils.h

@@ -290,6 +290,10 @@ public:
 
 private:
     wxWindowList *m_winDisabled;
+
+#ifdef __WXMSW__
+    wxWindow *m_winTop;
+#endif // MSW
 };
 
 // ----------------------------------------------------------------------------