wxDisplay cleanup/rewrite:

- wxDisplay is now a concrete class and uses a pImpl-based design
- got rid of four duplicate but subtly different versions of trivial
  single display-only wxDisplay implementation (but 2 versions of Mac
  Classic and Mac CoreGraphics implementations each still remain...)
- assorted code simplifications and memory leaks fixes


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@38127 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/unix/displayx11.h

@@ -1,48 +0,0 @@
-/////////////////////////////////////////////////////////////////////////////
-// Name:        displayx11.h
-// Purpose:     wxDisplay class for Unix/X11
-// Author:      Brian Victor
-// Modified by: 
-// Created:     12/05/02
-// RCS-ID:      $Id$
-// Copyright:   (c) wxWidgets team
-// Licence:     wxWindows licence
-/////////////////////////////////////////////////////////////////////////////
-
-#ifndef _WX_DISPLAYX11_H_
-#define _WX_DISPLAYX11_H_
-
-#if wxUSE_DISPLAY
-
-class wxRect;
-class wxString;
-class wxDisplayUnixPriv;
-
-class WXDLLEXPORT wxDisplay : public wxDisplayBase
-{
-
-  public:
-    wxDisplay ( size_t index = 0 );
-
-    virtual wxRect GetGeometry() const;
-    virtual int GetDepth() const;
-    virtual wxString GetName() const;
-    virtual wxArrayVideoModes
-        GetModes(const wxVideoMode& mode = wxDefaultVideoMode) const;
-
-    virtual wxVideoMode GetCurrentMode() const;
-
-    virtual bool ChangeMode(const wxVideoMode& mode = wxDefaultVideoMode);
-
-    ~wxDisplay();
-
-  private:
-    wxDisplayUnixPriv *m_priv;
-
-    DECLARE_NO_COPY_CLASS(wxDisplay)
-};
-
-#endif // wxUSE_DISPLAY
-
-#endif // _WX_GTK_DISPLAY_H_
-