[GHC] #11804: Export zonkEvBinds from TcHsSyn.

[GHC]

#11804: Export zonkEvBinds from TcHsSyn.
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           Reporter:  conal          |             Owner:
               Type:  feature        |            Status:  new
  request                            |
           Priority:  normal         |         Milestone:
          Component:  Compiler       |           Version:  8.1
           Keywords:                 |  Operating System:  Unknown/Multiple
       Architecture:                 |   Type of failure:  None/Unknown
  Unknown/Multiple                   |
          Test Case:                 |        Blocked By:
           Blocking:                 |   Related Tickets:
Differential Rev(s):                 |         Wiki Page:
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 Needed for constructing correct constraint-satisfying code (particularly
 type class instances) in a Core-to-Core transformation.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11804>
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