BIND 10 #2986: Auth statistics counters become minus (64bit counters)

[BIND 10 Development]

#2986: Auth statistics counters become minus (64bit counters)
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                   Reporter:         |                 Owner:
  fujiwara                           |                Status:  new
                       Type:         |             Milestone:  New Tasks
  defect                             |              Keywords:
                   Priority:         |             Sensitive:  0
  medium                             |           Sub-Project:  DNS
                  Component:         |  Estimated Difficulty:  0
  statistics                         |           Total Hours:  0
               CVSS Scoring:         |
            Defect Severity:  N/A    |
Feature Depending on Ticket:         |
        Add Hours to Ticket:  0      |
                  Internal?:  0      |
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 Statistics counters are unsigned int (32bit) and integer values in CC are
 signed int (32bit).
 If a counter value becomes 2^31, -2^31 is sent to stats daemon.

 One of solutions is to change "integer" type to signed 64bit in
 src/lib/cc/data.h and add unsigned 64bit support to JSON output.

 python may treat 64bit unsigned integer numbers.

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Ticket URL: <https://bind10.isc.org/ticket/2986>
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