Various tweaks:

* Include more packages
* Use abr
* Install openafs (TODO: make this optional)
Make configtool installation more sane

* Don't download debconf information from a random URL, use functions to
  specify the preseeding instead
Fix quotes
Fix multiple whitespace chars in debconf
This appears to be the way to keep configtool's debconf bits happy...
More useful outputs
More helpful status output
Add helpful progress messages, add ability to add options to configtool

* more progress messages detailing which commands are being executed
  (fixes that annoying "has it hung" feeling)
* allow flags to be passed to configtool.  Default to --nopost, but
  allow override (so eg "--post --ifpresent" can be used).  Useful for
  wireless.
* Explicitly roll out /etc/wireless, including postcts, so abr-sub
  happens