* quassel and quassel-qt4 don't conflict with quassel-sever anymore. * Enable parallel building. * quassel-core.quasselcore.init: Add "$network $local_fs $remote_fs" to Required-Stop. * Strip binaries in *-qt4 packages. * quassel-core: Fix lintian warning maintainer-script-ignores-errors. * Drop dh_builddeb override to use lzma compression as the kde dh sequence already takes care of this.