[MacPorts] #57117: upgrade last users of protobuf-cpp to protobuf3-cpp

[MacPorts]

#57117: upgrade last users of protobuf-cpp to protobuf3-cpp
----------------------------------------------+--------------------
  Reporter:  pmetzger                         |      Owner:  (none)
      Type:  enhancement                      |     Status:  new
  Priority:  Normal                           |  Milestone:
 Component:  ports                            |    Version:
Resolution:                                   |   Keywords:
      Port:  raceintospace shogun-devel sumo  |
----------------------------------------------+--------------------
Changes (by ryandesign):

 * cc: ryandesign (removed)
 * port:  caffe MyPaint opencv raceintospace shogun-devel sumo =>
     raceintospace shogun-devel sumo


Comment:

 caffe was fixed in [927b4ccc53a51898999d816af30a9ecceda6ea7c/macports-
 ports]

 opencv was fixed in [d98d7d7369a9f350c609082d8e1147c47831edc1/macports-
 ports]

 MyPaint was fixed in [c7c14efc3a55a380f871bbed2e0952116fc981e2/macports-
 ports]

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Ticket URL: <https://trac.macports.org/ticket/57117#comment:15>
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