/usr/include/boost/fusion/support/ is in libboost1.46-dev 1.46.1-7ubuntu3.
This file is owned by root:root, with mode 0o755.
..
/usr/include/boost/fusion/support/category_of.hpp
/usr/include/boost/fusion/support/deduce.hpp
/usr/include/boost/fusion/support/deduce_sequence.hpp
/usr/include/boost/fusion/support/detail/
/usr/include/boost/fusion/support/detail/access.hpp
/usr/include/boost/fusion/support/detail/as_fusion_element.hpp
/usr/include/boost/fusion/support/detail/category_of.hpp
/usr/include/boost/fusion/support/detail/is_mpl_sequence.hpp
/usr/include/boost/fusion/support/detail/is_view.hpp
/usr/include/boost/fusion/support/detail/mpl_iterator_category.hpp
/usr/include/boost/fusion/support/detail/unknown_key.hpp
/usr/include/boost/fusion/support/ext_/
/usr/include/boost/fusion/support/ext_/is_segmented.hpp
/usr/include/boost/fusion/support/is_iterator.hpp
/usr/include/boost/fusion/support/is_sequence.hpp
/usr/include/boost/fusion/support/is_view.hpp
/usr/include/boost/fusion/support/iterator_base.hpp
/usr/include/boost/fusion/support/pair.hpp
/usr/include/boost/fusion/support/sequence_base.hpp
/usr/include/boost/fusion/support/tag_of.hpp
/usr/include/boost/fusion/support/tag_of_fwd.hpp
/usr/include/boost/fusion/support/unused.hpp
/usr/include/boost/fusion/support/void.hpp