Bump cabal-install version number to 1.20.0.3

cabal-install/cabal-install.cabal

 Name:               cabal-install
-Version:            1.20.0.2
+Version:            1.20.0.3
 Synopsis:           The command-line interface for Cabal and Hackage.
 Description:
     The \'cabal\' command-line program simplifies the process of managing

cabal-install/changelog

 -*-change-log-*-
 
+1.20.0.3 Johan Tibell <johan.tibell@gmail.com> June 2014
+	* Don't attempt to rename dist if it is already named correctly
+	* Treat all flags of a package as interdependent.
+	* Allow template-haskell to be upgradable again
+
 1.20.0.2 Johan Tibell <johan.tibell@gmail.com> May 2014
 	* Increase max-backjumps to 2000.
 	* Fix solver bug which led to missed install plans.