[MacPorts] #52227: go @1.7 upgrade to upstream 1.7.1 and self-bootstrap

[MacPorts]

#52227: go @1.7 upgrade to upstream 1.7.1 and self-bootstrap
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  Reporter:  leonardo.schenkel@…  |      Owner:  macports-tickets@…
      Type:  update               |     Status:  new
  Priority:  Normal               |  Milestone:
 Component:  ports                |    Version:  2.3.4
Resolution:                       |   Keywords:
      Port:  go                   |
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Comment (by leonardo.schenkel@…):

 Please disregard the self-bootstrap. I misunderstood how Go bootstrapping
 works and I thought it was capable of self-bootstraping, however only Go
 1.4 can do that. (Homebrew downloads a pre-built binary of 1.7 to
 bootstrap 1.7, that is what threw me off.)

 I have updated the patch only to update the version and keep Go 1.4 in
 place. Note that currently it won't build on macOS 10.12 (Sierra) unless
 Go 1.4 is updated to account for the change of timeofday(2). The patch
 proposed on https://trac.macports.org/ticket/52041 works for me.

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Ticket URL: <https://trac.macports.org/ticket/52227#comment:2>
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