BIND 10 #2166: update RRset::toWire() so it will render RRSIGs, too

[BIND 10 Development]

#2166: update RRset::toWire() so it will render RRSIGs, too
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                   Reporter:         |                 Owner:  muks
  jinmei                             |                Status:  assigned
                       Type:  task   |             Milestone:
                   Priority:         |  Sprint-20120821
  medium                             |            Resolution:
                  Component:         |             Sensitive:  0
  libdns++                           |           Sub-Project:  DNS
                   Keywords:         |  Estimated Difficulty:  4
            Defect Severity:  N/A    |           Total Hours:  0
Feature Depending on Ticket:         |
  scalable inmemory                  |
        Add Hours to Ticket:  0      |
                  Internal?:  0      |
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Changes (by muks):

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


Comment:

 Sorry I'm picking this (though I'm not finished with #2165) as I have
 implemented it. There was no `Message::toWire()` testcase before for
 records with RRSIGs and I added one as a part of #2164. Now there's a
 `Message::toWire()` testcase, I can test that `RRset::toWire()` works
 properly (`make check` passes inside `src/lib/dns/`) before moving on to
 fixing other libraries. For this, I had to implement the `RRset::toWire()`
 specializations.

 Also there are many tests to update, and it's less work to fix the tests
 than comment/uncomment them.

-- 
Ticket URL: <http://bind10.isc.org/ticket/2166#comment:3>
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