BIND 10 #2036: Integrate valgrind into our test suite

[BIND 10 Development]

#2036: Integrate valgrind into our test suite
-------------------------------------+-------------------------------------
                   Reporter:  muks   |                 Owner:  UnAssigned
                       Type:         |                Status:  reviewing
  enhancement                        |             Milestone:
                   Priority:         |  Sprint-20120619
  medium                             |            Resolution:
                  Component:  build  |             Sensitive:  0
  system                             |           Sub-Project:  DNS
                   Keywords:         |  Estimated Difficulty:  0
            Defect Severity:  N/A    |           Total Hours:  0
Feature Depending on Ticket:         |
        Add Hours to Ticket:  0      |
                  Internal?:  0      |
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Comment (by muks):

 After several `make check` runs, there's a failure under Valgrind which
 could be timing related:
 {{{
 [ RUN      ] NameserverEntryTest.ExpirationTime
 nameserver_entry_unittest.cc:224: Failure
 Value of: curtime + rrv6_->getTTL().getValue()
   Actual: 1339574778
 Expected: expiration
 Which is: 1339574779
 nameserver_entry_unittest.cc:233: Failure
 Value of: curtime + minttl
   Actual: 1339574778
 Expected: expiration
 Which is: 1339574779
 [  FAILED  ] NameserverEntryTest.ExpirationTime (141 ms)
 }}}

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Ticket URL: <http://bind10.isc.org/ticket/2036#comment:5>
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