Restore compilability for the WIN32 platform.

git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3-porting@11181 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

src/Fl_win32.cxx

@@ -83,6 +83,9 @@
   for async mode proper operation, not mentioning the side effects...
 */
 
+// make this available on all platforms to make code maintainability easier
+class Fl_Widget *fl_selection_requestor;
+
 // Internal functions
 static void fl_clipboard_notify_target(HWND wnd);
 static void fl_clipboard_notify_untarget(HWND wnd);