Add support for Utopic; deprecate older sysnames

- Add support for Utopic (14.10) (Trac: #1537)
- generate_sysnames.py now knows about deprecated sysnames and
  will include them in its output for separate parsing
- machtype now has a "-D" option to generate a list of deprecated
  sysnames that attach(1) and friends might use for notifying the
  user