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

src/qt/printqt.cpp

@@ -0,0 +1,56 @@
+/////////////////////////////////////////////////////////////////////////////
+// Name:        src/qt/printqt.cpp
+// Author:      Peter Most
+// Copyright:   (c) Peter Most
+// Licence:     wxWindows licence
+/////////////////////////////////////////////////////////////////////////////
+
+// For compilers that support precompilation, includes "wx.h".
+#include "wx/wxprec.h"
+
+#include "wx/print.h"
+
+wxQtPrinter::wxQtPrinter( wxPrintDialogData *WXUNUSED(data))
+{
+}
+
+bool wxQtPrinter::Setup(wxWindow *WXUNUSED(parent))
+{
+    return false;
+}
+
+bool wxQtPrinter::Print(wxWindow *WXUNUSED(parent), wxPrintout *WXUNUSED(printout), bool WXUNUSED(prompt))
+{
+    return false;
+}
+
+wxDC* wxQtPrinter::PrintDialog(wxWindow *WXUNUSED(parent))
+{
+    return NULL;
+}
+
+//##############################################################################
+
+wxQtPrintPreview::wxQtPrintPreview(wxPrintout *printout,
+                      wxPrintout *printoutForPrinting,
+                      wxPrintDialogData *data)
+    : wxPrintPreviewBase( printout, printoutForPrinting, data )
+{
+}
+
+wxQtPrintPreview::wxQtPrintPreview(wxPrintout *printout,
+                      wxPrintout *printoutForPrinting,
+                      wxPrintData *data)
+    : wxPrintPreviewBase( printout, printoutForPrinting, data )
+{
+}
+
+bool wxQtPrintPreview::Print(bool WXUNUSED(interactive))
+{
+    return false;
+}
+
+void wxQtPrintPreview::DetermineScaling()
+{
+}
+