BIND 10 #593: sharing more code in NSEC and NSEC3

[BIND 10 Development]

#593: sharing more code in NSEC and NSEC3
-------------------------------------+-------------------------------------
           Reporter:  jinmei         |                      Owner:
               Type:  task           |  UnAssigned
           Priority:  major          |                     Status:  new
          Component:  DNSPacket API  |                  Milestone:  A-Team-
          Sensitive:  0              |  Task-Backlog
Add Hours to Ticket:  0              |                   Keywords:
        Total Hours:  0              |  Estimated Number of Hours:  0
                                     |                  Billable?:  1
                                     |                  Internal?:  0
-------------------------------------+-------------------------------------
 This is a continuation from #117.

 NSEC and NSEC3 classes should share more code for type bitmap processing.
 I'd also propose using std::bitset in the "from text" constructor(s).
 It would make the code more intuitive.

-- 
Ticket URL: <http://bind10.isc.org/ticket/593>
BIND 10 Development <http://bind10.isc.org>
BIND 10 Development