unify *len checks
set noparent for filedelete chain
free blockmeta on EINTERNAL
cluster key cosmetics
fix c&p
fix regression in yacb_listaclusers_map_key
Mask out volumes which have become damaged after a node failure
fix previous
don't exit on ITER_NO_MORE here
Fix sx_hashfs_check() false positives

Skip checking file hashes during rebalance.
Skip checking admin user existence on bare nodes.
Do not print error when volume is disabled and file references to it.
Fix checking negative counters for blocks.
3rdparty: upgrade to sqlite 3.8.7.3
client-test: improve file management in test_acl()
client-test: leak in check_users() + cosmetics
client-test: add various errors test
client-test: cosmetics
client-test: hide unwanted sx error message
client-test: leak in test_errors()
client-test: check volumes
client-test: add file revision removing test
client-test: use sxc_file_from_url() sometimes