[MacPorts] #28087: bump vigra to 1.7.1

[MacPorts]

#28087: bump vigra to 1.7.1
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 Reporter:  michaelld@…             |       Owner:  benjamin.seppke@…        
     Type:  defect                  |      Status:  new                      
 Priority:  Normal                  |   Milestone:                           
Component:  ports                   |     Version:  1.9.2                    
 Keywords:                          |        Port:  vigra                    
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Comment(by michaelld@…):

 I'm attaching YA diff.  Comments:

 1. We cannot control which version of CMake is installed; but, MacPorts
 installs a compatible version for finding Python 2.7+, so we can safely
 ignore this issue.

 2. I've added a check for the Boost::Python library, which:

  a) if not found, disabled the +numpy variant.

  b) if found, determines the Python version and allows a +numpy variant
 that will add dependencies with numpy and sphinx of the correct Python
 persuasion.

 3.&4. I've added a patch to correct the INSTALL_NAME_DIR for the Python
 .so files, if installed.  !@#$ CMake does not make this easy, and, really,
 is quite stupid about how it makes this determination -- if setting the
 "self-id" for a library, it should be either (1) the same as the file; or
 (2) just the filename (no path).  It should -never- be some other path.
 No idea what happens when the self-id -is- some other path though ...

 Give this version and whirl & let me know how it goes.

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Ticket URL: <https://trac.macports.org/ticket/28087#comment:6>
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