Upstream has added a reference to the LGPL license to a file that had previously "all rights reserved" and thus led to a rejection of the package.
Current issues are with the jgrapht library whose version is unclear. Debian's current installation is of version 0.6.0, which is outdated but currently remains in order to remain compatible with another program. The pkg-java svn has working packages of version 0.7.3, tests with which are pending.
The bytecode library is already in Debian testing for a long time now.