[GHC] #9262: Allow free variables in reifyInstances

[GHC]

#9262: Allow free variables in reifyInstances
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              Reporter:  goldfire    |            Owner:  goldfire
                  Type:  feature     |           Status:  patch
  request                            |        Milestone:
              Priority:  normal      |          Version:  7.8.2
             Component:  Template    |         Keywords:
  Haskell                            |     Architecture:  Unknown/Multiple
            Resolution:              |       Difficulty:  Unknown
      Operating System:              |       Blocked By:
  Unknown/Multiple                   |  Related Tickets:
       Type of failure:              |
  None/Unknown                       |
             Test Case:              |
              Blocking:              |
Differential Revisions:  Phab:D359   |
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Comment (by Richard Eisenberg <eir@…>):

 In [changeset:"2cc593dd50197c252d87321280a04f04cc173dbc/ghc"]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="2cc593dd50197c252d87321280a04f04cc173dbc"
 Bring unbound tyvars into scope during reifyInstances.

 Fix #9262.
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9262#comment:5>
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