/usr/include/crystalspace-2.0/bindings/common/ is in libcrystalspace-dev 2.0+dfsg-1build1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/crystalspace-2.0/bindings/common/allinterfaces.i
/usr/include/crystalspace-2.0/bindings/common/animation.i
/usr/include/crystalspace-2.0/bindings/common/basepost.i
/usr/include/crystalspace-2.0/bindings/common/core.i
/usr/include/crystalspace-2.0/bindings/common/csgeom.i
/usr/include/crystalspace-2.0/bindings/common/csgfx.i
/usr/include/crystalspace-2.0/bindings/common/csstring.i
/usr/include/crystalspace-2.0/bindings/common/cstool.i
/usr/include/crystalspace-2.0/bindings/common/iengine.i
/usr/include/crystalspace-2.0/bindings/common/imap.i
/usr/include/crystalspace-2.0/bindings/common/imesh.i
/usr/include/crystalspace-2.0/bindings/common/isndsys.i
/usr/include/crystalspace-2.0/bindings/common/ivaria.i
/usr/include/crystalspace-2.0/bindings/common/ivideo.i
/usr/include/crystalspace-2.0/bindings/common/scf.i
/usr/include/crystalspace-2.0/bindings/common/scfsugar.i