PrinterJob.printDialog() and PrinterJob.pageDialog() always display
the windows native print dialog

Conversely
PrinterJob.printDialog(PrintRequestAttributeSet) and
PrinterJob.pageDialog(PrintRequestAttributeSet)

always display the cross-platform dialog.

Many options such as Sides, Collation etc can be changed when using
the native dialog, but there is no way for an interested application
to query these, nor to specify them as defaults if using the native
dialog.

Internally we already have support for using attributes with
the native dialog. In fact that's how all these options are stored.
We also have an internal enum attribute class which we use to
decide which dialog to display.

We should promote it to API