/usr/share/postgresql-9.1-postgis/ is in postgresql-9.1-postgis 1.5.3-2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/postgresql-9.1-postgis/utils/
/usr/share/postgresql-9.1-postgis/utils/README
/usr/share/postgresql-9.1-postgis/utils/create_undef.pl
/usr/share/postgresql-9.1-postgis/utils/new_postgis_restore.pl
/usr/share/postgresql-9.1-postgis/utils/postgis_proc_upgrade.pl
/usr/share/postgresql-9.1-postgis/utils/postgis_restore.pl
/usr/share/postgresql-9.1-postgis/utils/profile_intersects.pl
/usr/share/postgresql-9.1-postgis/utils/read_scripts_version.pl
/usr/share/postgresql-9.1-postgis/utils/test_estimation.pl
/usr/share/postgresql-9.1-postgis/utils/test_geography_estimation.pl
/usr/share/postgresql-9.1-postgis/utils/test_geography_joinestimation.pl
/usr/share/postgresql-9.1-postgis/utils/test_joinestimation.pl