calculate etag without listing whole volume
update ssl test script
send volume list reply directly

and handle iteration errors
return early if it is a HEAD
sxcp: add --ignore-errors option (bb#881)
turn on debug only when "make check VERBOSE=1" is used
sxadm: add new option --resize to proportionally grow or shrink the entire cluster (bb#835)
Consider file size and meta size when calculating current volume size. WIP

This allow to take those values into account when checking quotas.
Cosmetics: do not return size field returned in two columns by qm_get and qm_getrev queries
Cosmetics: fix sx_hashfs_tmp_getmeta() c&p junk
Do not let files getting removed during rebalance

If the same revision of file exists on new volnode as one propagated by old volnode, then it was scheduled for deletion. Since file delete operation is scheduled via jobmanager, create_file() function returned EEXIST because violating sqlite unique constraint and after that job was being executed causing file to disappear.