BIND 10 #923: Create a cross-breed between isc_throw and LOG_ERROR macro.

[BIND 10 Development]

#923: Create a cross-breed between isc_throw and LOG_ERROR macro.
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            Reporter:  vorner        |                        Owner:
                Type:  enhancement   |                       Status:  new
            Priority:  major         |                    Milestone:  New
           Component:  Unclassified  |  Tasks
           Sensitive:  0             |                     Keywords:
         Sub-Project:  Core          |              Defect Severity:  N/A
Estimated Difficulty:  0             |  Feature Depending on Ticket:
         Total Hours:  0             |          Add Hours to Ticket:  0
                                     |                    Internal?:  0
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 We often need to log an error message and throw an exception at the same
 place. We also generate similar message for them.

 So the proposal is to create a macro that creates the message like for
 logging (with the message ID and formatting), logs it and then throws an
 exception with the same message as one command.

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Ticket URL: <https://bind10.isc.org/ticket/923>
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BIND 10 Development