Bug#893417: Pending fixes for bugs in the spock package

[pkg-java-maintainers at lists.alioth.debian.org]

tag 893417 + pending
thanks

Some bugs in the spock package are closed in revision
715def2e045ef5cde39bf3a0cf4509ae866bf82b in branch 'master' by
Emmanuel Bourg

The full diff can be seen at
https://anonscm.debian.org/cgit/pkg-java/spock.git/commit/?id=715def2

Commit message:

    Fixed the build failure with Java 9 (Closes: #893417)