[GHC] #8395: Various testsuite fixes for cross-compilation/i386/etc.

[GHC]

#8395: Various testsuite fixes for cross-compilation/i386/etc.
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       Reporter:  rwbarton    |             Owner:
           Type:  bug         |            Status:  new
       Priority:  normal      |         Milestone:
      Component:  Test Suite  |           Version:  7.7
       Keywords:              |  Operating System:  Linux
   Architecture:  x86         |   Type of failure:  None/Unknown
     Difficulty:  Unknown     |         Test Case:
     Blocked By:              |          Blocking:
Related Tickets:              |
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 First patch is to libraries/base, other three are to testsuite.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8395>
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