This is a regression caused by the latest update of jna. Adding a build dependency on libjna-platform-java should fix this issue, I'm taking care of it.
Emmanuel Bourg __ This is the maintainer address of Debian's Java team <http://lists.alioth.debian.org/cgi-bin/mailman/listinfo/pkg-java-maintainers>. Please use debian-j...@lists.debian.org for discussions and questions.
