Added smooth etc.
smooth v0.3

smooth:
  always reports errors/warnings as "smooth"

  moved core code to fn() and calls it in a loop

  git_commit() and git_transfer() finished

  git_commit_paranoid() added but not used

  added r_*[st,track] and r_git[t,transfer]

_s.sh:
  added r_*[a,add], r_svn[v,visualise]
  added r_git[branch_stat{,-long,-remote}] and abbreviations

  r_git[forget] now uses HEAD