[MacPorts] #53245: Add innoextract 1.6 port

[MacPorts]

#53245: Add innoextract 1.6 port
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  Reporter:  mkhon        |      Owner:
      Type:  submission   |     Status:  new
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:
Resolution:               |   Keywords:
      Port:  innoextract  |
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Comment (by mkhon):

 1. I can maintain it
 2. it works ok
 3. it works for me. you can test it by unpacking any of .exe files from
 here: https://sourceforge.net/projects/boost/files/boost-binaries/1.63.0/

 Updated Portfile attached

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Ticket URL: <https://trac.macports.org/ticket/53245#comment:3>
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