All files have been consolidated in dot-files.
Don't link to obsolete files
Fold most of the per-host functions into .emacs, since
  I have been copying them from host to host.
In setup.sh, do not link .bash_profile because I have
  a more recent version in the system-changes project
In bt, use ~/work as the default non-drive directory.
  Always call file-name-nondirectory on drive-root.