Make wxPORTRAIT and wxLANDSCAPE elements of wxPrintOrientation enum.

Change wxPrintData::SetOrientation() to take wxPrintOrientation instead of
int.

Closes #11393.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@62823 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/msw/dcprint.cpp

@@ -83,7 +83,7 @@ wxPrinterDC::wxPrinterDC(const wxString& driver_name,
                          const wxString& device_name,
                          const wxString& file,
                          bool interactive,
-                         int orientation)
+                         wxPrintOrientation orientation)
 {
     m_isInteractive = interactive;