Added 'nuser' and 'ngroup' dirlog fields (extra info), see
DATA_STRUCTURES (rev. 5_b1)

Signed-off-by: nixnodes <code@eth.si>
altlog data structure wasn't aligned to 4b (rev. 5_b2)

Signed-off-by: nixnodes <code@eth.si>
Changed some altlog properties, update filelog scripts and rebuild
filelog if using it (rev. 5)

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