BIND 10 #2593: Using old versions of boost::optional fails with GCC 4.4.x and above

[BIND 10 Development]

#2593: Using old versions of boost::optional fails with GCC 4.4.x and above
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            Reporter:  muks          |                        Owner:
                Type:  defect        |  UnAssigned
            Priority:  medium        |                       Status:
           Component:  libdns++      |  reviewing
            Keywords:                |                    Milestone:
           Sensitive:  0             |  Sprint-20130122
         Sub-Project:  DNS           |                   Resolution:
Estimated Difficulty:  4             |                 CVSS Scoring:
         Total Hours:  0             |              Defect Severity:  N/A
                                     |  Feature Depending on Ticket:
                                     |          Add Hours to Ticket:  0
                                     |                    Internal?:  0
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Changes (by muks):

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


Comment:

 Up for review. This uses the workaround approach.

 Does this require a `ChangeLog` entry? It fixes an issue that we
 introduced before any subsequent releases have been made, and no changes
 to build dependencies are necessary.

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Ticket URL: <http://bind10.isc.org/ticket/2593#comment:3>
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