Make dpkg-buildpackage -B actually work.

And that was the one type of build I could have tested locally, too.
Oops...
Oops! I left out an "install" in the binary-indep rule.

Git-Dch: Ignore
Make dpkg-buildpackages -j work, and make sure font files are only
built once.
Imported Debian patch 1:5.1.20080914-1.3