[MacPorts] #46523: Update: swig 3.0.3

[MacPorts]

#46523: Update: swig 3.0.3
----------------------------+--------------------------------
 Reporter:  mschamschula@…  |      Owner:  macports-tickets@…
     Type:  update          |     Status:  new
 Priority:  Normal          |  Milestone:
Component:  ports           |    Version:  2.3.3
 Keywords:  haspatch        |       Port:  swig
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 swig has been updated to version 3.0.3. New this version:
 {{{
 - Add support for C++11 strongly typed enumerations.
 - Numerous bug fixes and minor enhancements for C#, D, Go, Java,
 Javascript, PHP, Perl and Python wrappers.
 }}}

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Ticket URL: <https://trac.macports.org/ticket/46523>
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