In the `CMakeLists.txt` for the tests I see: ```cmake install(FILES ${PYSOURCE} PERMISSIONS OWNER_READ OWNER_WRITE OWNER_EXECUTE GROUP_READ GROUP_EXECUTE WORLD_READ WORLD_EXECUTE DESTINATION slycot/tests) ``` Why are these files installed with execute permission? On Linux/OSX this is not needed, is it a Windows thing, or something specific to pytest?