[MacPorts] #28524: caml-graph @1.3 upgrade to version 1.6

[MacPorts]

#28524: caml-graph @1.3 upgrade to version 1.6
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 Reporter:  fh@…         |       Owner:  macports-tickets@…                   
     Type:  update       |      Status:  new                                  
 Priority:  Normal       |   Milestone:                                       
Component:  ports        |     Version:  1.9.2                                
 Keywords:  haspatch     |        Port:  caml-graph                           
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 Current version (1.3) fails during the destroot phase (see ticket #26091).
 I have attached files that upgrade to version 1.6. It fixes the bug at the
 same time.

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Ticket URL: <https://trac.macports.org/ticket/28524>
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