[MacPorts] #41998: yaml-cpp @0.5.1 version update

[MacPorts]

#41998: yaml-cpp @0.5.1 version update
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 Reporter:  patrick@…  |      Owner:  macports-tickets@…
     Type:  update     |     Status:  new
 Priority:  Normal     |  Milestone:
Component:  ports      |    Version:  2.2.1
 Keywords:             |       Port:  yaml-cpp
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 This is a Portfile patch to update yaml-cpp to the latest version 0.5.1
 (see https://code.google.com/p/yaml-cpp/).
 CC'd the original author.

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Ticket URL: <https://trac.macports.org/ticket/41998>
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