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/fontdlg.h

@@ -0,0 +1,32 @@
+/////////////////////////////////////////////////////////////////////////////
+// Name:        wx/qt/fontdlg.h
+// Author:      Peter Most
+// Copyright:   (c) Peter Most
+// Licence:     wxWindows licence
+/////////////////////////////////////////////////////////////////////////////
+
+#ifndef _WX_QT_FONTDLG_H_
+#define _WX_QT_FONTDLG_H_
+
+#include <QtWidgets/QFontDialog>
+
+class WXDLLIMPEXP_CORE wxFontDialog : public wxFontDialogBase
+{
+public:
+    wxFontDialog() { }
+    wxFontDialog(wxWindow *parent) { Create(parent); }
+    wxFontDialog(wxWindow *parent, const wxFontData& data) { Create(parent, data); }
+    
+    virtual QFontDialog *GetHandle() const { return static_cast<QFontDialog *>(m_qtWindow); }
+
+protected:
+    bool DoCreate(wxWindow *parent);
+    
+private:
+
+    wxFontData m_data;
+
+    DECLARE_DYNAMIC_CLASS(wxFontDialog)
+};
+
+#endif // _WX_QT_FONTDLG_H_