In which location becomes more apparent to the (OS X) user.

This fixes the native OS X add printer dialog with respect to location. The user can search the list of printers by name (device-make-and-model) and by location (device-info), and when the printer is selected in the dialog, the location field is pre-populated.

Of course, the default driver selected is "Generic PostScript Printer" which CCP is not. I'll see if that's even fixable. Dynamic PPDs might make that difficult.

And, because I'm not git-smart, this pull request includes adding the getPrinter() method. Proceed at your own peril.