set control socket permissions to 0770

close #175
Added a lot of missing RCU unlocks.
Fixed(?) RCU locks (Added a few more of them)
DNSSEC: support for ECDSA validation

refs #4
libknot: Fixed wrong dname comparison, small fixes.

 - DNAMEs in RRSets are now compared using memcmp
 - Modified DNSSEC dump parameters (no wrap ...)
 - Removed double rollback

Refs #4
Fixed setting NSEC3 node ref in adjusting.
Simplified previous fix.
Removed old debug message.
config: fix case insensitivity for key names

refs #177
Small fixes to RCU
Do not put empty RRSet to Answer in most cases.
libknot: Fixed wrong comparison.
libknot/changesets: Better check for changeset emptiness.
Fixed check for changeset emptiness.

It may happen that changeset has beginning SOA set, but no other
RRs - in that case it should probably be considered empty.
update wire read/write tests

Tests were failing on big-endian machines.

refs #178
Moved node to NSEC3 connecting to node adjusting.

Saves one iteration over the zone + properly sets NSEC3 references
when disabling NSEC3.

refs #4
Fixed creating NSEC3 name.
Leak fix
DNSSEC: delete NSEC3 chain when switching back to NSEC

Prior this commit, NSEC3 nodes were kept in the zone when NSEC3PARAM
RR was removed.

refs #4
DNSSEC: use zone diff when deleting NSEC3 chain

refs #4