BIND 10 #373: lib/config/module_spec.h shouldn't use 'using namespace'

[BIND 10 Development]

#373: lib/config/module_spec.h shouldn't use 'using namespace'
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  Reporter:  jinmei        |            Owner:  jinmei               
      Type:  defect        |           Status:  new                  
  Priority:  minor         |        Milestone:  y2 12 month milestone
 Component:  build system  |         Keywords:                       
 Sensitive:  0             |   Estimatedhours:  0                    
     Hours:  0             |         Billable:  1                    
Totalhours:  0             |         Internal:  0                    
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 It currently has the following line:
 {{{
 using namespace isc::data;
 }}}

 We should remove this, and adjust other souce files accordingly.

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Ticket URL: <http://bind10.isc.org/ticket/373>
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BIND 10 Development