BIND 10 #1954: Implement perfdhcp command parser

[BIND 10 Development]

#1954: Implement perfdhcp command parser
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                   Reporter:         |                 Owner:  UnAssigned
  stephen                            |                Status:  reviewing
                       Type:         |             Milestone:  Sprint-
  enhancement                        |  DHCP-20120528
                   Priority:         |            Resolution:
  medium                             |             Sensitive:  0
                  Component:         |           Sub-Project:  DHCP
  perfdhcp                           |  Estimated Difficulty:  0
                   Keywords:         |           Total Hours:  0
            Defect Severity:  N/A    |
Feature Depending on Ticket:         |
        Add Hours to Ticket:  36     |
                  Internal?:  0      |
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Changes (by marcin):

 * hours:  2 => 36
 * owner:  marcin => UnAssigned
 * status:  accepted => reviewing


Comment:

 Added CommandOptions class along with unit tests and refactored the C code
 to C++ where possible. I also made a copy of perfdhcp.c to perfdhcp.cc to
 make it compile with C++ compiler and link properly with new C++ files.
 Verifed that new code compiles on Ubuntu (clang/gcc), MacOS (clang),
 FreeBSD 8.2 (gcc), Solaris (Sunstudio).

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Ticket URL: <http://bind10.isc.org/ticket/1954#comment:4>
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