Bug#983324: allow to build the package without a udeb

[Matthias Klose]

Package: src:expat
Version: 2.2.10-1
Tags: patch

allow to build the package without a udeb.

patch at
http://launchpadlibrarian.net/524420234/expat_2.2.10-1build1_2.2.10-1ubuntu1.diff.gz