[Hackage] #169: Add --version

[Hackage]

#169: Add --version
--------------------------+-------------------------------------------------
  Reporter:  guest        |        Owner:       
      Type:  enhancement  |       Status:  new  
  Priority:  normal       |    Milestone:       
 Component:  Cabal        |      Version:  1.2.0
  Severity:  normal       |     Keywords:       
Difficulty:  normal       |   Ghcversion:  6.6  
  Platform:  Linux        |  
--------------------------+-------------------------------------------------
 cabal-install --version should return a version number.

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Ticket URL: <http://hackage.haskell.org/trac/hackage/ticket/169>
Hackage <http://haskell.org/cabal/>
Hackage: Cabal and related projects