Fix <update> (rev. 42)

Signed-off-by: nixnodes <code@eth.si>
fix <dupefile-rebuild> glroot alignment

Signed-off-by: nixnodes <code@eth.si>
Segfaulted when looking up 'user' or 'group' fields, in certain cases
(rev. 19_b4)

Signed-off-by: nixnodes <code@eth.si>