[MacPorts] #28614: mercurial: update to 1.8

[MacPorts]

#28614: mercurial: update to 1.8
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 Reporter:  studio17@…          |       Owner:  deric@…           
     Type:  update              |      Status:  new               
 Priority:  Normal              |   Milestone:                    
Component:  ports               |     Version:                    
 Keywords:                      |        Port:  mercurial         
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Comment(by easieste@…):

 Starting 24 hour timer for maintainer timeout…

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Ticket URL: <https://trac.macports.org/ticket/28614#comment:5>
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