/usr/share/fusionforge/ is in fusionforge-plugin-scmdarcs 6.0.3+20151023-1ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/fusionforge/cronjobs/
/usr/share/fusionforge/plugins/
/usr/share/fusionforge/plugins/scmdarcs/
/usr/share/fusionforge/plugins/scmdarcs/GNUMakefile
/usr/share/fusionforge/plugins/scmdarcs/common/
/usr/share/fusionforge/plugins/scmdarcs/common/DarcsPlugin.class.php
/usr/share/fusionforge/plugins/scmdarcs/common/scmdarcs-init.php
/usr/share/fusionforge/plugins/scmdarcs/db/
/usr/share/fusionforge/plugins/scmdarcs/db/scmdarcs-init.sql
/usr/share/fusionforge/plugins/scmdarcs/etc/
/usr/share/fusionforge/plugins/scmdarcs/etc/httpd.conf.d/
/usr/share/fusionforge/plugins/scmdarcs/etc/httpd.conf.d/plugin-scmdarcs.inc
/usr/share/fusionforge/plugins/scmdarcs/etc/scmdarcs.ini
/usr/share/fusionforge/post-install.d/