[MacPorts] #53029: libetpan: Upgrade to 1.8

[MacPorts]

#53029: libetpan: Upgrade to 1.8
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  Reporter:  pmetzger  |      Owner:
      Type:  update    |     Status:  assigned
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:
Resolution:            |   Keywords:  security
      Port:  libetpan  |
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Comment (by pmetzger):

 There's a straightforward way to fix this so it can be upgraded at least
 for now. After running autogen.sh, the port needs to patch the resulting
 config.h file to define HAS_ICONV.

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Ticket URL: <https://trac.macports.org/ticket/53029#comment:4>
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