[MacPorts] #42162: grep at 2.14: update to 2.16

[MacPorts]

#42162: grep at 2.14: update to 2.16
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  Reporter:  james@…  |      Owner:  macports-tickets@…
      Type:  update   |     Status:  new
  Priority:  Normal   |  Milestone:
 Component:  ports    |    Version:  2.2.1
Resolution:           |   Keywords:
      Port:           |
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Comment (by egall@…):

 Link to the announcement from 2 weeks ago:
 http://savannah.gnu.org/forum/forum.php?forum_id=7836

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Ticket URL: <https://trac.macports.org/ticket/42162#comment:1>
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