BIND 10 #2920: handle full data source reconfig with shmem support in b10-auth

[BIND 10 Development]

#2920: handle full data source reconfig with shmem support in b10-auth
-------------------------------------+-------------------------------------
                   Reporter:         |                 Owner:
  jinmei                             |                Status:  new
                       Type:  task   |             Milestone:  New Tasks
                   Priority:         |              Keywords:
  medium                             |             Sensitive:  0
                  Component:         |           Sub-Project:  DNS
  b10-auth                           |  Estimated Difficulty:  0
               CVSS Scoring:         |           Total Hours:  0
            Defect Severity:  N/A    |
Feature Depending on Ticket:         |
  shared memory data source          |
        Add Hours to Ticket:  0      |
                  Internal?:  0      |
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 subtask of #2830, depend on #2918 (and other updates to auth for shmem
 support).

 In this task we implement this:
 http://bind10.isc.org/wiki/SharedMemoryIPC#a6.3.ReaderBehavior
 (we might still have to further break down this task into a few
 subtasks, but at the moment we define it as a single task).

 Be careful about merge timing: we may not be able to merge it
 without #2919 (but possibly we can, depending on we can include
 the generation-id in existing segment_info_update message).

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Ticket URL: <http://bind10.isc.org/ticket/2920>
BIND 10 Development <http://bind10.isc.org>
BIND 10 Development