BIND 10 #3016: Change the type of Auth server statistics counter to uint64_t and use lower 63bit

[BIND 10 Development]

#3016: Change the type of Auth server statistics counter to uint64_t and use lower
63bit
-------------------------------------+-------------------------------------
            Reporter:  fujiwara      |                        Owner:
                Type:  defect        |  fujiwara
            Priority:  medium        |                       Status:
           Component:  Unclassified  |  reviewing
            Keywords:                |                    Milestone:
           Sensitive:  0             |  Sprint-20130806
         Sub-Project:  DNS           |                   Resolution:
Estimated Difficulty:  1             |                 CVSS Scoring:
         Total Hours:  0.26          |              Defect Severity:  N/A
                                     |  Feature Depending on Ticket:
                                     |          Add Hours to Ticket:  0
                                     |                    Internal?:  0
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Changes (by vorner):

 * owner:  vorner => fujiwara
 * totalhours:  0 => 0.26


Comment:

 Hello

 Would it make sense to use `uint64_t` in the for cycle in the test as well
 as in the main code, instead of `long long`?

 Otherwise, the branch seems clean and ready for merge (provided the branch
 it is based on is merged first).

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Ticket URL: <http://bind10.isc.org/ticket/3016#comment:8>
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