BIND 10 #2000: update libdns++ OPT RDATA so it can handle EDNS options

[BIND 10 Development]

#2000: update libdns++ OPT RDATA so it can handle EDNS options
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            Reporter:  jinmei        |                        Owner:  muks
                Type:  enhancement   |                       Status:
            Priority:  medium        |  reviewing
           Component:  libdns++      |                    Milestone:
            Keywords:                |  bind10-1.2-release-freeze
           Sensitive:  0             |                   Resolution:
         Sub-Project:  DNS           |                 CVSS Scoring:
Estimated Difficulty:  4             |              Defect Severity:  N/A
         Total Hours:  0             |  Feature Depending on Ticket:  NSID
                                     |          Add Hours to Ticket:  0
                                     |                    Internal?:  0
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Changes (by stephen):

 * owner:  stephen => muks


Comment:

 > The pseudo-RRs are actually stored as a boost::shared_ptr to a
 std::vector of PseudoRR objects.
 Ack.  Should really be looking at the code while I type the comments and
 not rely on memory.

 > that it would first address the copy-construction issue, and also be
 simple to understand and change if API changes are required.
 Fair point, although as the number of options is generally small, I doubt
 that the copy construction overhead would be high. However, what is there
 is a valid solution to the problem, and there is no need to change it.

 All changes OK, please merge.

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Ticket URL: <http://bind10.isc.org/ticket/2000#comment:8>
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