/usr/include/xalanc/Include/ is in libxalan-c-dev 1.11-6ubuntu3.
This file is owned by root:root, with mode 0o755.
..
/usr/include/xalanc/Include/AIXDefinitions.hpp
/usr/include/xalanc/Include/GCCDefinitions.hpp
/usr/include/xalanc/Include/HPUXDefinitions.hpp
/usr/include/xalanc/Include/IntelDefinitions.hpp
/usr/include/xalanc/Include/OS390Definitions.hpp
/usr/include/xalanc/Include/OS400Definitions.hpp
/usr/include/xalanc/Include/PlatformDefinitions.hpp
/usr/include/xalanc/Include/STLHelper.hpp
/usr/include/xalanc/Include/SolarisDefinitions.hpp
/usr/include/xalanc/Include/TRU64Definitions.hpp
/usr/include/xalanc/Include/VCPPDefinitions.hpp
/usr/include/xalanc/Include/XalanAutoPtr.hpp
/usr/include/xalanc/Include/XalanDeque.hpp
/usr/include/xalanc/Include/XalanList.hpp
/usr/include/xalanc/Include/XalanMap.hpp
/usr/include/xalanc/Include/XalanMemMgrAutoPtr.hpp
/usr/include/xalanc/Include/XalanMemoryManagement.hpp
/usr/include/xalanc/Include/XalanObjectCache.hpp
/usr/include/xalanc/Include/XalanObjectStackCache.hpp
/usr/include/xalanc/Include/XalanSet.hpp
/usr/include/xalanc/Include/XalanVector.hpp
/usr/include/xalanc/Include/XalanVersion.hpp