4401. [misc] Change LICENSE to MPL 2.0.
update copyrights
3890. [bug] RRSIG sets that were not loaded in a single transaction at start up where not being correctly added to re-signing heaps. [RT #36302]
update copyright notice
2925. [bug] Named failed to accept uncachable negative responses from insecure zones. [RT# 21555]
2448. [func] Add NSEC3 support. [RT #15452]