[MacPorts] #52445: portpatch.tcl: support xz-compressed patchfiles

[MacPorts]

#52445: portpatch.tcl: support xz-compressed patchfiles
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  Reporter:  ryandesign   |      Owner:  macports-tickets@…
      Type:  enhancement  |     Status:  new
  Priority:  Normal       |  Milestone:  MacPorts 2.6.0
 Component:  base         |    Version:
Resolution:               |   Keywords:
      Port:               |
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Comment (by kurthindenburg):

 https://github.com/macports/macports-base/pull/67

 Note that this doesn't allow use of tar.xz patch files such as
 w3m_0.5.3-36.debian.tar.xz - that would need another patch

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Ticket URL: <https://trac.macports.org/ticket/52445#comment:6>
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