set file ownerships and permissions

Stefan Schuermans Stefan Schuermans ignore return value of lchown fow now (for Ubuntu 18.04 compile) ec5b95d @ 2020-09-19 10:11:44
..
Config.h add copyright & license 2020-09-17 19:23:53
Group.h add copyright & license 2020-09-17 19:23:53
Permissions.h add copyright & license 2020-09-17 19:23:53
StringUtils.h add copyright & license 2020-09-17 19:23:53
Tree.h add copyright & license 2020-09-17 19:23:53
User.h add copyright & license 2020-09-17 19:23:53