Merge wxQT branch into the trunk.

This merges in the latest sources from GSoC 2014 wxQt project with just a few
minor corrections, mostly undoing wrong changes to common files in that branch
(results of a previous bad merge?) and getting rid of whitespace-only changes.
Also remove debug logging from wxGrid.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@77455 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/qt/spinbutt.h

@@ -0,0 +1,43 @@
+/////////////////////////////////////////////////////////////////////////////
+// Name:        wx/qt/spinbutt.h
+// Author:      Peter Most
+// Copyright:   (c) Peter Most
+// Licence:     wxWindows licence
+/////////////////////////////////////////////////////////////////////////////
+
+#ifndef _WX_QT_SPINBUTT_H_
+#define _WX_QT_SPINBUTT_H_
+
+#include "wx/spinbutt.h"
+#include <QtWidgets/QSpinBox>
+
+class WXDLLIMPEXP_CORE wxSpinButton : public wxSpinButtonBase
+{
+public:
+    wxSpinButton();
+    wxSpinButton(wxWindow *parent,
+                 wxWindowID id = -1,
+                 const wxPoint& pos = wxDefaultPosition,
+                 const wxSize& size = wxDefaultSize,
+                 long style = wxSP_VERTICAL,
+                 const wxString& name = wxSPIN_BUTTON_NAME);
+
+    bool Create(wxWindow *parent,
+                wxWindowID id = -1,
+                const wxPoint& pos = wxDefaultPosition,
+                const wxSize& size = wxDefaultSize,
+                long style = wxSP_VERTICAL,
+                const wxString& name = wxSPIN_BUTTON_NAME);
+
+    virtual int GetValue() const;
+    virtual void SetValue(int val);
+
+    virtual QSpinBox *GetHandle() const;
+
+private:
+    QSpinBox *m_qtSpinBox;
+
+    wxDECLARE_DYNAMIC_CLASS( wxSpinButton );
+};
+
+#endif // _WX_QT_SPINBUTT_H_