BIND 10 #743: Conversion of config library to use the new logging interface

[BIND 10 Development]

#743: Conversion of config library to use the new logging interface
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                   Reporter:         |                 Owner:  UnAssigned
  stephen                            |                Status:  reviewing
                       Type:         |             Milestone:
  enhancement                        |  Sprint-20110517
                   Priority:  minor  |            Resolution:
                  Component:         |             Sensitive:  0
  configuration                      |           Sub-Project:  DNS
                   Keywords:         |  Estimated Difficulty:  5.0
            Defect Severity:  N/A    |           Total Hours:  0
Feature Depending on Ticket:         |
  logging                            |
        Add Hours to Ticket:  0      |
                  Internal?:  0      |
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Changes (by jelte):

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


Comment:

 Ready for review.

 While creating messages and extended descriptions, I noticed a few
 potential issues which i fixed along the way:

 - If the config manager does not accept the modules specification, or if
 the
   'get current config' command returns with an error, the system used to
   ignore that fact apart from printing an error, and continue running. It
   seems much better to explicitely fail, since the module would be running
   independent of what its config is supposed to be, which would be really
   unstable

 - If the module cannot parse a command it gets over the command channel,
   it used to send back an error. If we have multiple modules listening on
   the same channel, this would result in multiple errors being returned
   It will now log an error, but it will not send back an answer

 should this need a changelog:
 [func] C++ client side of configuration now uses BIND10 logging system. It
 also has improved error handling when communicating with the rest of the
 system.

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Ticket URL: <http://bind10.isc.org/ticket/743#comment:4>
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