/usr/ is in fusionforge-plugin-projectlabels 5.3.2+20141104-3+deb8u3.
This file is owned by root:root, with mode 0o755.
..
/usr/share/
/usr/share/gforge/
/usr/share/gforge/plugins/
/usr/share/gforge/plugins/projectlabels/
/usr/share/gforge/plugins/projectlabels/db/
/usr/share/gforge/plugins/projectlabels/db/projectlabels-init.sql
/usr/share/gforge/plugins/projectlabels/bin/
/usr/share/gforge/plugins/projectlabels/www/
/usr/share/gforge/plugins/projectlabels/www/index.php
/usr/share/gforge/plugins/projectlabels/common/
/usr/share/gforge/plugins/projectlabels/common/projectlabels-init.php
/usr/share/gforge/plugins/projectlabels/common/ProjectLabelsPlugin.class.php
/usr/share/gforge/plugins/projectlabels/lib/
/usr/share/doc/
/usr/share/doc/fusionforge-plugin-projectlabels/
/usr/share/doc/fusionforge-plugin-projectlabels/copyright
/usr/share/doc/fusionforge-plugin-projectlabels/changelog.gz
/usr/share/doc/fusionforge-plugin-projectlabels/README
/usr/share/doc/fusionforge-plugin-projectlabels/changelog.Debian.gz