[GHC] #12398: Expose 'withCleanupSession' as a replacement for 'defaultCleanupHandler'

[GHC]

#12398: Expose 'withCleanupSession' as a replacement for 'defaultCleanupHandler'
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           Reporter:  DanielG        |             Owner:
               Type:  bug            |            Status:  new
           Priority:  normal         |         Milestone:
          Component:  Compiler       |           Version:  8.0.1
           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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 GHC used to export 'defaultCleanupHandler' going back as far as 7.4,
 starting with 8.0 no equivalent function seems to be exported. Please
 consider exporting 'withCleanupSession' as a replacement.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12398>
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