Download and extract extra-info descriptors published by the directory
authorities.  Put them in an in/ subdirectory.

  $ grep -REil "^extra-info gabelmoo|^extra-info moria1|^extra-info tor26|
    ^extra-info ides|^extra-info dannenberg|^extra-info urras|
    ^extra-info maatuska|^extra-info dizum" extra-infos-20??-?? |
    xargs -I{} mv {} in/

Put metrics-lib's descriptor.jar in lib/.

Run the Java program.

  $ javac -cp lib/descriptor.jar Eval.java
  $ java -cp .:lib/descriptor.jar Eval

Run R.

  $ R --slave -f eval.R

