[MacPorts] #53206: Please update xar to 1.6.1 and/or add ext2 patch

[MacPorts]

#53206: Please update xar to 1.6.1 and/or add ext2 patch
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  Reporter:  gallafent  |      Owner:
      Type:  update     |     Status:  new
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:
Resolution:             |   Keywords:  haspatch
      Port:  xar        |
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Changes (by gallafent):

 * Attachment "Portfile" added.

 Portfile adapted from those from xar and xar-devel to fetch and build
 1.6.1 from github

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Ticket URL: <https://trac.macports.org/ticket/53206>
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