[tbb-bugs] #21710 [Applications/Tor Browser]: Upgrade Go to 1.8

[Tor Bug Tracker & Wiki]

#21710: Upgrade Go to 1.8
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     Reporter:  dcf                       |      Owner:  tbb-team
         Type:  task                      |     Status:  new
     Priority:  Medium                    |  Milestone:
    Component:  Applications/Tor Browser  |    Version:
     Severity:  Normal                    |   Keywords:  tbb-gitian
Actual Points:                            |  Parent ID:
       Points:                            |   Reviewer:
      Sponsor:                            |
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 * [https://blog.golang.org/go1.8 blog post]
  * [https://golang.org/doc/go1.8 release notes]

 Note:
 > Go 1.8 now only supports OS X 10.8 or later. This is likely the last Go
 release to support 10.8. Compiling Go or running binaries on older OS X
 versions is untested.

 See also #21709 for Go 1.7.5. I'm going to test a 1.7.5 patch before
 working on 1.8.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/21710>
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