[MacPorts] #20986: qt4-x11 update to 4.7.0

[MacPorts]

#20986: qt4-x11 update to 4.7.0
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  Reporter:  macsforever2000@…  |      Owner:  michaelld@…
      Type:  update             |     Status:  new
  Priority:  Normal             |  Milestone:
 Component:  ports              |    Version:
Resolution:                     |   Keywords:
      Port:  qt4-x11            |
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Comment (by egall@…):

 `port livecheck qt4-x11` fails with:
 {{{
 Error: cannot check if qt4-x11 was updated (The requested URL returned
 error: 504)
 }}}
 Although shouldn't qt4-x11's version generally be kept synced with
 qt4-mac's? qt4-mac is currently at version 4.8.4 btw.

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Ticket URL: <https://trac.macports.org/ticket/20986#comment:14>
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