[MacPorts] #41656: Update Go Portfile to 1.2

[MacPorts]

#41656: Update Go Portfile to 1.2
---------------------+-------------------------
  Reporter:  b@…     |      Owner:  ciserlohn@…
      Type:  update  |     Status:  closed
  Priority:  Normal  |  Milestone:
 Component:  ports   |    Version:
Resolution:  fixed   |   Keywords:  haspatch
      Port:  go      |
---------------------+-------------------------

Comment (by larryv@…):

 Replying to [comment:7 b@…]:
 > I would prefer to have separate ports for go-vet and go-doc.

 A separate port or subport that tracks the `go.tools` subrepository seems
 like the best solution. Maybe “`go-tools`”.

-- 
Ticket URL: <https://trac.macports.org/ticket/41656#comment:8>
MacPorts <http://www.macports.org/>
Ports system for OS X