[GHC] #10350: Should be able to specify path for eventlog output.

[GHC]

#10350: Should be able to specify path for eventlog output.
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              Reporter:  literon     |             Owner:  simonmar
                  Type:  bug         |            Status:  new
              Priority:  normal      |         Milestone:
             Component:  Runtime     |           Version:  7.10.1
  System                             |  Operating System:  Unknown/Multiple
              Keywords:              |   Type of failure:  None/Unknown
          Architecture:              |        Blocked By:
  Unknown/Multiple                   |   Related Tickets:
             Test Case:              |
              Blocking:              |
Differential Revisions:              |
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 Currently it is a fixed path, but the binary might run in an env where
 write access is restricted.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10350>
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