Bug#773829: lucene4: JavaCC parsers are not generated during the build

[Hilko Bengen]

* Emmanuel Bourg:

> Source: lucene4
> Version: 1:4.6.1+dfsg-2
> Severity: serious
>
> The lucene4 package contains several pre-generated Java files created by JavaCC.
> These files should be at least regenerated during the build and maybe removed
> from the upstream tarball like the lucene-solr package.

Just like #773805, I cannot prepare a fix and upload at the moment. It
would be great if you (or anyone else) could make an upload.

Cheers,
-Hilko