4401. [misc] Change LICENSE to MPL 2.0.
update copyright notice
set $Id$
3150. [func] Improved startup and reconfiguration time by enabling zones to load in multiple threads. [RT #25333]
3137. [func] Improve hardware scalability by allowing multiple worker threads to process incoming UDP packets. This can significantly increase query throughput on some systems. [RT #22992]
3131. [func] Improve scalability by allocating one zone task per 100 zones at startup time, rather than using a fixed-size task table. [RT #24406]