[pkg] do not include toplevel directories in rpm (closes #10362119) Our spec file conflicts with the filesystem package in centos7: we set permissions to 0755 for /usr/bin and /usr/lib whereas filesystem sets them to 0555. So to be compatible with both centos7 and others we simply ignore these directories.

raise NotImplementedError("Cannot migrate such an old version. Use intermediate Cubiweb version (try 3.16.x)")