BIND 10 #2545: Option value to be specified in in CSV format in Config Parser

[BIND 10 Development]

#2545: Option value to be specified in in CSV format in Config Parser
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            Reporter:  marcin        |                        Owner:
                Type:  task          |  UnAssigned
            Priority:  medium        |                       Status:
           Component:  dhcpconf      |  assigned
            Keywords:                |                    Milestone:
           Sensitive:  0             |  Sprint-DHCP-20130103
         Sub-Project:  DHCP          |                   Resolution:
Estimated Difficulty:  0             |                 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 marcin):

 * owner:  marcin => UnAssigned
 * status:  accepted => assigned


Comment:

 The ticket is now ready for review. The new configuration parameter has
 been added to the spec file. This parameter accept boolean value that
 controls whether option data is entered as a string of comma separated
 values (where each value initializes one option field) or as a string of
 hexadecimal digits that represent the binary content of a whole option.

 I also made a couple of changes to the existing configuration parsers:
 - more clear separation of the build() phase from the commit() phase - the
 latter should simply apply parsed values to the server's configuration and
 should be exception safe as much as possible
 - moved the parser classes to an anonymous namespace as they are not
 intended to be accessed externally

 Changes applied to v4 '''and''' V6 parsers.

 Please review.

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Ticket URL: <http://bind10.isc.org/ticket/2545#comment:3>
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