Added new method Fl_Copy_Surface::draw_decorated_window()

that copies a window to the clipboard together with its title bar and borders.
This requires very little new code because the capture of window decorations
is shared with the Fl_Paged_Device::print window() method.
The device test program is changed to call the new method.

git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3@10928 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

FL/Fl_Paged_Device.H

@@ -36,6 +36,10 @@
  or Fl_PostScript_File_Device instead.
  */
 class FL_EXPORT Fl_Paged_Device : public Fl_Surface_Device {
+#ifndef __APPLE__
+  friend class Fl_Copy_Surface;
+  void draw_decorated_window(Fl_Window *win, int x_offset, int y_offset, Fl_Surface_Device *toset);
+#endif
 public:
   /**
    \brief Possible page formats.