[MacPorts] #44526: update for xxdiff

[MacPorts]

#44526: update for xxdiff
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 Reporter:  rjvbertin@…  |      Owner:  macports-tickets@…
     Type:  update       |     Status:  new
 Priority:  Normal       |  Milestone:
Component:  ports        |    Version:
 Keywords:  haspatch     |       Port:  xxdiff
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 Attached is a diff that updates the xdiff portfile to use the latest
 version, 4.0 (which builds against qt4-mac).
 I've moved the documentation (that includes a series of screenshots) to a
 +doc variant.

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Ticket URL: <https://trac.macports.org/ticket/44526>
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