[MacPorts] #35247: curl: install libcurl.m4

[MacPorts]

#35247: curl: install libcurl.m4
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 Reporter:  cal@…             |       Owner:  ryandesign@…           
     Type:  defect            |      Status:  new                    
 Priority:  Normal            |   Milestone:                         
Component:  ports             |     Version:  2.1.1                  
 Keywords:  haspatch          |        Port:  curl                   
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Comment(by cal@…):

 Bump.

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Ticket URL: <https://trac.macports.org/ticket/35247#comment:2>
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