[xml/sgml-pkgs] Bug#429175: New upstream version 2.0.1

[Matthias Klose]

> Upgrading expat is a rather tricky thing as due to a major screw up in an
> NMU many moons ago expat in Debian has two sonames...  I haven't found a
> way around this yet without breaking things like being able to install a
> binary package that requires this version of expat.

why not use the standard technique in Debian: renaming the library
package, keeping the soname (and dropping the earlier soname), then
requesting binNMUs for the rdepends?