update copyright notice / whitespace
4879. [bug] dns_rdata_caa:value_len is was small. [RT #47086] (cherry picked from commit 3ae586b857301518799478fd084db63f9c805562)
4401. [misc] Change LICENSE to MPL 2.0.
update copyright notice
[master] add CAA rdata support 3056. [protocol] Added support for CAA record type (RFC 6844). [RT #36625]