/usr/include/ is in libjaula-dev 1.4.0-3.
This file is owned by root:root, with mode 0o755.
..
/usr/include/jaula/
/usr/include/jaula/jaula_name_duplicated.h
/usr/include/jaula/jaula_lexan.h
/usr/include/jaula/jaula_value_boolean.h
/usr/include/jaula/jaula_value.h
/usr/include/jaula/jaula_value_object.h
/usr/include/jaula/jaula_lexan_error.h
/usr/include/jaula/jaula_value_array.h
/usr/include/jaula/jaula_bad_data_type.h
/usr/include/jaula/jaula_value_complex.h
/usr/include/jaula/jaula_exception.h
/usr/include/jaula/jaula_no_error.h
/usr/include/jaula/jaula_value_null.h
/usr/include/jaula/jaula_value_number_int.h
/usr/include/jaula/jaula_syntax_error.h
/usr/include/jaula/jaula_value_number.h
/usr/include/jaula/jaula_parse.h
/usr/include/jaula/jaula_value_string.h
/usr/include/jaula.h