Next phase of Print Factory code.

  Next phase of Print Factory code.
    Created a mini interface so that the generic
    wxPrintDialog can show a "printer" and a
    "status" line if the print factory wants
    this to be the case.
    Moved some code (print mode) back from the
    PostScript only print data to the general
    print data since it is sort of general.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@30101 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775