Merge branch 'mswdc-draw-point-checkbox' of https://github.com/MaartenBent/wxWidgets

Draw the same shape in wxDC::DrawCheckMark() under all platforms and
provide wxRenderer::DrawCheckMark() for drawing the platform-specific
shape.

Also fix wxGCDC::DrawPoint() to use the default one point wide pen.

See https://github.com/wxWidgets/wxWidgets/pull/1471

src/common/dcgraph.cpp

@@ -752,6 +752,9 @@ void wxGCDCImpl::DoDrawPoint( wxCoord x, wxCoord y )
     if (!m_logicalFunctionSupported)
         return;
 
+    wxPen pointPen(m_pen.GetColour());
+    wxDCPenChanger penChanger(*GetOwner(), pointPen);
+
 #if defined(__WXMSW__) && wxUSE_GRAPHICS_GDIPLUS
     // single point path does not work with GDI+
     if (m_graphicContext->GetRenderer() == wxGraphicsRenderer::GetGDIPlusRenderer())