[GHC] #13162: Testsuite driver has problems reliably removing files

[GHC]

#13162: Testsuite driver has problems reliably removing files
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           Reporter:  Phyx-             |             Owner:  Phyx-
               Type:  bug               |            Status:  new
           Priority:  normal            |         Milestone:
          Component:  Compiler          |           Version:  8.0.1
           Keywords:                    |  Operating System:  Windows
       Architecture:  Unknown/Multiple  |   Type of failure:  Other
          Test Case:                    |        Blocked By:
           Blocking:                    |   Related Tickets:
Differential Rev(s):  Phab:D2936        |         Wiki Page:
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 Testsuite has sporadic failures while trying to remove the previous test
 output.

 This presents itself in a number of ways in the testsuite.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13162>
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