* Handle packages which compile themselves several times with
  different compiler flags.

* Handle packages which build multiple versions with different ./configure
  flags.

* Come up with a good way to selectively override rules or even portions
  of rules.

* Have a simple way to put docs like changelogs and such in one package,
  and symlink them from other packages.

* New regression tests for:
  - bzip2 tarball builds
  - disabling make check
  - gnome
  - perl

* Fix current test suite so that install rules are tested.

* Support spaces in filenames (hard).

* Take over Debian archive.
