[MacPorts] #32936: tiff: update to 4.0.0

[MacPorts]

#32936: tiff: update to 4.0.0
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 Reporter:  jmr@…             |       Owner:  waqar@…           
     Type:  update            |      Status:  new               
 Priority:  Normal            |   Milestone:                    
Component:  ports             |     Version:                    
 Keywords:                    |        Port:  tiff              
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Comment(by macosx12345@…):

 I attach unified diff's between present tiff 3.9.5 and what might be a
 tiff 4.0.0. I was able to build and run it under Leopard (i386) and Snow
 Leopard (both x86_64 and universal).

 However, there was a recent discussion on libtiff's mailing list about
 introducing versioned symbols, having Linux distributions in mind. Within
 a few weeks, there would be a release of tiff 3.9.6 and of tiff 4.0.1,
 both with versioned symbols. I don't know if versioned symbols exist under
 Mac OS; if yes, maybe it would be better to skip tiff 4.0.0 and wait for
 tiff version 4.0.1 before rev bumping the dependents.

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Ticket URL: <https://trac.macports.org/ticket/32936#comment:1>
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