[MacPorts] #27757: mercurial: use python27

[MacPorts]

#27757: mercurial: use python27
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 Reporter:  singingwolfboy@…             |       Owner:  deric@…           
     Type:  defect                       |      Status:  new               
 Priority:  Normal                       |   Milestone:                    
Component:  ports                        |     Version:  1.9.2             
 Keywords:                               |        Port:  mercurial         
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Comment(by marc.schlaich@…):

 I should note again: Why there is no py26-mercurial and py27-mercurial?
 There are a lot of follow up packages which requires Mercurial as a
 package, for example hggit and hgsubversion, which exists only for Python
 2.6 because of this weak port name.

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Ticket URL: <https://trac.macports.org/ticket/27757#comment:10>
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