[MacPorts] #29892: GLC_lib update to version 2.2.0.

[MacPorts]

#29892: GLC_lib update to version 2.2.0.
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 Reporter:  unfo-aaa@…           |       Owner:  macports@…            
     Type:  update               |      Status:  new                   
 Priority:  Normal               |   Milestone:                        
Component:  ports                |     Version:                        
 Keywords:                       |        Port:  GLC_lib               
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Comment(by macsforever2000@…):

 The maintainer is not responding. Attaching a unified diff to the Portfile
 will help this move forward.

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Ticket URL: <https://trac.macports.org/ticket/29892#comment:3>
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