BIND 10 #2236: Add a --enable-debug configure flag

[BIND 10 Development]

#2236: Add a --enable-debug configure flag
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                   Reporter:         |                 Owner:  UnAssigned
  vorner                             |                Status:  reviewing
                       Type:  task   |             Milestone:
                   Priority:  low    |  Sprint-20121023
                  Component:         |            Resolution:
  Unclassified                       |             Sensitive:  0
                   Keywords:         |           Sub-Project:  DNS
            Defect Severity:  N/A    |  Estimated Difficulty:  3
Feature Depending on Ticket:         |           Total Hours:  0
        Add Hours to Ticket:  0      |
                  Internal?:  0      |
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Changes (by muks):

 * owner:  muks => UnAssigned
 * status:  assigned => reviewing


Comment:

 This bug is ready for review.

 Note that `config.h` is included in `sync.h`, and some methods are
 conditionally available. This effectively means `sync.h` cannot be dist-
 ed. If we want to change this, we'll have to make the stuff in `sync.h`
 and conditionally add their definitions inside `sync.cc`. That would mean
 that the methods with no definitions will still be called.

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Ticket URL: <http://bind10.isc.org/ticket/2236#comment:5>
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