[MacPorts] #31123: port libstdc++ doc

[MacPorts]

#31123: port libstdc++ doc
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 Reporter:  pengyu.ut@…          |       Owner:  macports-tickets@…                   
     Type:  defect               |      Status:  new                                  
 Priority:  Normal               |   Milestone:                                       
Component:  ports                |     Version:  2.0.2                                
 Keywords:                       |        Port:                                       
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 http://gcc.gnu.org/onlinedocs/libstdc++/manual/documentation_hacking.html

 I don't find libstdc++ doc in macports. Can somebody port it? Thanks!

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Ticket URL: <https://trac.macports.org/ticket/31123>
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