[MacPorts] #57412: clang ports: add runtime dependency on cctools

[MacPorts]

#57412: clang ports: add runtime dependency on cctools
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  Reporter:  ryandesign                          |      Owner:  (none)
      Type:  defect                              |     Status:  new
  Priority:  Normal                              |  Milestone:
 Component:  ports                               |    Version:
Resolution:                                      |   Keywords:
      Port:  clang-3.9, clang-4.0, clang-5.0,    |
  clang-6.0, clang-7.0, clang-devel              |
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Comment (by kencu):

 Oh, one thing -- this 10.6.8 machine I have runs Xcode 4.2 as well as the
 older version, and Xcode 4.2 fails to load the newer objects as well. So
 the cutoff for a functional cctools is presently above Xcode 4.2, but
 below 10.7's (which is 4.5 I think).

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Ticket URL: <https://trac.macports.org/ticket/57412#comment:15>
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