4401. [misc] Change LICENSE to MPL 2.0.
update copyright notice / whitespace
[master] clean up gcc -Wshadow warnings 4039. [cleanup] Cleaned up warnings from gcc -Wshadow. [RT #37381]
update copyright notice
3692. [bug] Two calls to dns_db_getoriginnode were fatal if there was no data at the node. [RT #35080]