BIND 10 #2574: improve b10-loadzone on progress/result report

[BIND 10 Development]

#2574: improve b10-loadzone on progress/result report
-------------------------------------+-------------------------------------
            Reporter:  jinmei        |                        Owner:
                Type:  task          |  jinmei
            Priority:  medium        |                       Status:
           Component:  loadzone      |  accepted
            Keywords:                |                    Milestone:
           Sensitive:  0             |  Sprint-20130122
         Sub-Project:  DNS           |                   Resolution:
Estimated Difficulty:  2             |                 CVSS Scoring:
         Total Hours:  0             |              Defect Severity:  N/A
                                     |  Feature Depending on Ticket:
                                     |  loadzone-ng
                                     |          Add Hours to Ticket:  0
                                     |                    Internal?:  0
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Comment (by jinmei):

 trac2574 is ready for review.  Diff is small and should be easy to
 review.

 Note: this branch cannot be merged until #2573 is completed.

 Proposed changelog entry:

 {{{
 548.    [func]          jinmei
         b10-loadzone: improved completion log message and intermediate
         reports: It now logs the precise number of loaded RRs on
         completion, and intermediate reports show additional information
         such as the estimated progress in percentage and estimated time
         to complete.
         (Trac #2574, git TBD)
 }}}

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Ticket URL: <http://bind10.isc.org/ticket/2574#comment:3>
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