Support ellipsizing of markup text in wxDVC

Fix wxDataViewTextRenderer to at least partially respect ellipsize mode
when using markup text. Generic implementation only supports
wxELLIPSIZE_END and wxELLIPSIZE_NONE at the moment, but the wxOSX and
wxGTK ones have full support.

src/generic/datavgen.cpp

@@ -1095,7 +1095,7 @@ bool wxDataViewTextRenderer::Render(wxRect rect, wxDC *dc, int state)
         int flags = 0;
         if ( state & wxDATAVIEW_CELL_SELECTED )
             flags |= wxCONTROL_SELECTED;
-        m_markupText->RenderItemText(GetView(), *dc, rect, flags);
+        m_markupText->RenderItemText(GetView(), *dc, rect, flags, GetEllipsizeMode());
     }
     else
 #endif // wxUSE_MARKUP