/usr/include/boost/parameter/aux_/ is in libboost1.55-dev 1.55.0+dfsg-3.
This file is owned by root:root, with mode 0o755.
..
/usr/include/boost/parameter/aux_/arg_list.hpp
/usr/include/boost/parameter/aux_/cast.hpp
/usr/include/boost/parameter/aux_/default.hpp
/usr/include/boost/parameter/aux_/is_maybe.hpp
/usr/include/boost/parameter/aux_/maybe.hpp
/usr/include/boost/parameter/aux_/overloads.hpp
/usr/include/boost/parameter/aux_/parameter_requirements.hpp
/usr/include/boost/parameter/aux_/parenthesized_type.hpp
/usr/include/boost/parameter/aux_/preprocessor/
/usr/include/boost/parameter/aux_/preprocessor/flatten.hpp
/usr/include/boost/parameter/aux_/preprocessor/for_each.hpp
/usr/include/boost/parameter/aux_/python/
/usr/include/boost/parameter/aux_/python/invoker.hpp
/usr/include/boost/parameter/aux_/python/invoker_iterate.hpp
/usr/include/boost/parameter/aux_/result_of0.hpp
/usr/include/boost/parameter/aux_/set.hpp
/usr/include/boost/parameter/aux_/tag.hpp
/usr/include/boost/parameter/aux_/tagged_argument.hpp
/usr/include/boost/parameter/aux_/template_keyword.hpp
/usr/include/boost/parameter/aux_/unwrap_cv_reference.hpp
/usr/include/boost/parameter/aux_/void.hpp
/usr/include/boost/parameter/aux_/yesno.hpp