[MacPorts] #53385: qemu update to 2.8.0

[MacPorts]

#53385: qemu update to 2.8.0
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 Reporter:  chicagotripp  |      Owner:
     Type:  update        |     Status:  new
 Priority:  Normal        |  Milestone:
Component:  ports         |    Version:
 Keywords:                |       Port:  qemu
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 I am providing a diff update to qemu version 2.8.0 from 2.7.0. I only
 changed the revision number and the checksums.

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Ticket URL: <https://trac.macports.org/ticket/53385>
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