BIND 10 #2282: implement specialized additional handling in in-memory data source

[BIND 10 Development]

#2282: implement specialized additional handling in in-memory data source
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                   Reporter:         |                 Owner:  jinmei
  jinmei                             |                Status:  accepted
                       Type:  task   |             Milestone:
                   Priority:         |  Sprint-20121009
  medium                             |            Resolution:
                  Component:  data   |             Sensitive:  0
  source                             |           Sub-Project:  DNS
                   Keywords:         |  Estimated Difficulty:  4
            Defect Severity:  N/A    |           Total Hours:  0
Feature Depending on Ticket:         |
        Add Hours to Ticket:  0      |
                  Internal?:  0      |
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Comment (by jinmei):

 trac2282 is ready for review.

 The diff is reasonably small (I believe), and should be pretty
 straightforward.  We can check the behavior with the exiting
 `ZoneFinderContextTest` tests, so we don't need to add many tests
 within this branch (I added one specific test case).

 The first commit is to merge dependency and should be ignored for
 review.

 May not be very likely, but if possible I'd like to complete #2218 and
 this ticket and merge the in-memory implementation before the release
 (it's still slower than the current one, but I think the drop will be
 in an acceptable range with this feature of this ticket).

-- 
Ticket URL: <https://bind10.isc.org/ticket/2282#comment:5>
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