[GHC] #7244: T6106: Use /bin/sh instead of /bin/bash

[GHC]

#7244: T6106: Use /bin/sh instead of /bin/bash
------------------------------+---------------------------------------------
 Reporter:  iquiw             |          Owner:                  
     Type:  bug               |         Status:  new             
 Priority:  normal            |      Component:  Test Suite      
  Version:  7.6.1             |       Keywords:                  
       Os:  Unknown/Multiple  |   Architecture:  Unknown/Multiple
  Failure:  None/Unknown      |       Testcase:                  
Blockedby:                    |       Blocking:                  
  Related:                    |  
------------------------------+---------------------------------------------
 testsuite/tests/ghci/scripts/T6106_preproc.sh should use /bin/sh instead
 of /bin/bash for portability.

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7244>
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