[GHC] #7107: Don't remove -package-conf

[GHC]

#7107: Don't remove -package-conf
------------------------------+---------------------------------------------
 Reporter:  tibbe             |          Owner:                  
     Type:  bug               |         Status:  new             
 Priority:  normal            |      Component:  Compiler        
  Version:  7.5               |       Keywords:                  
       Os:  Unknown/Multiple  |   Architecture:  Unknown/Multiple
  Failure:  None/Unknown      |       Testcase:                  
Blockedby:                    |       Blocking:                  
  Related:                    |  
------------------------------+---------------------------------------------
 Please keep `-package-conf` around as a (deprecated) alias for `-package-
 db`. Its removal breaks scripts and the Cabal test suite. Removing it will
 force all users of the old flag to have to write some code to detect which
 GHC version is used and then pick a flag depending on that.

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7107>
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