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/checkbox.h

@@ -0,0 +1,47 @@
+/////////////////////////////////////////////////////////////////////////////
+// Name:        wx/qt/checkbox.h
+// Author:      Peter Most
+// Copyright:   (c) Peter Most
+// Licence:     wxWindows licence
+/////////////////////////////////////////////////////////////////////////////
+
+#ifndef _WX_QT_CHECKBOX_H_
+#define _WX_QT_CHECKBOX_H_
+
+#include <QtWidgets/QCheckBox>
+
+class WXDLLIMPEXP_CORE wxCheckBox : public wxCheckBoxBase
+{
+public:
+    wxCheckBox();
+    wxCheckBox( wxWindow *parent, wxWindowID id, const wxString& label,
+            const wxPoint& pos = wxDefaultPosition,
+            const wxSize& size = wxDefaultSize, long style = 0,
+            const wxValidator& validator = wxDefaultValidator,
+            const wxString& name = wxCheckBoxNameStr);
+
+    bool Create(wxWindow *parent,
+                wxWindowID id,
+                const wxString& label,
+                const wxPoint& pos = wxDefaultPosition,
+                const wxSize& size = wxDefaultSize,
+                long style = 0,
+                const wxValidator& validator = wxDefaultValidator,
+                const wxString& name = wxCheckBoxNameStr );
+
+    virtual void SetValue(bool value);
+    virtual bool GetValue() const;
+
+    virtual QCheckBox *GetHandle() const;
+
+protected:
+    virtual void DoSet3StateValue(wxCheckBoxState state);
+    virtual wxCheckBoxState DoGet3StateValue() const;
+
+private:
+    QCheckBox *m_qtCheckBox;
+
+    wxDECLARE_DYNAMIC_CLASS(wxCheckBox);
+};
+
+#endif // _WX_QT_CHECKBOX_H_