Knot DNS v1.0.2

New features:
        * Configuration checker (invoked via knotc).
        * Specifying source interface for transfers and NOTIFY
          requests directly.

        * Fixed leak when querying non-existing name and zone
          SOA TTL > minimal.
        * Fixed some minor bugs in tansfers.

Other improvements:
        * Improved log messages (added date and time, better
          specification of XFR remote).
        * Improved saving incoming IXFR to journal (memory optimized).
        * Now using system scheduler (better for Linux).
        * Decreased thread stack size.