Some ippserver fixes to allow it to be used as a CUPS destination:

Some ippserver fixes to allow it to be used as a CUPS destination:

- Don't actually advertise IPPS support yet, since libcups doesn't support
  server-side HTTPS yet.
- Allow printer-uri values that have the right resource paths - this allows
  things like back-to-my-mac to work.
- Advertise the correct URI resource path in the Bonjour TXT record.
- Fix valid_doc_attributes to use the document-format-default value instead of
  "application/octet-stream".

git-svn-id: svn+ssh://src.apple.com/svn/cups/cups.org/trunk@11097 a1ca3aef-8c08-0410-bb20-df032aa958be