[MacPorts] #56254: mysql: update to 5.6.39

[MacPorts]

#56254: mysql: update to 5.6.39
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  Reporter:  josephsacco  |      Owner:  (none)
      Type:  update       |     Status:  new
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:
Resolution:               |   Keywords:
      Port:  mysql56      |
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Changes (by josephsacco):

 * Attachment "Portfile.diff" added.

 Portfile diff

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Ticket URL: <https://trac.macports.org/ticket/56254>
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