[MacPorts] #23215: Update gplk to 4.41

[MacPorts]

#23215: Update gplk to 4.41
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 Reporter:  nox@…             |       Owner:  lutz.horn@…          
     Type:  update            |      Status:  new                  
 Priority:  Normal            |   Milestone:                       
Component:  ports             |     Version:                       
 Keywords:                    |        Port:  glpk                 
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 Also, examples are now always installed.

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Ticket URL: <http://trac.macports.org/ticket/23215>
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