Bump version to 1.5.1 -- the next development series

Though we should try and limit divergence until 1.4.0 is released.

Cabal.cabal

 Name: Cabal
-Version: 1.3.9
+Version: 1.5.1
 Copyright: 2003-2006, Isaac Jones
 License: BSD3
 License-File: LICENSE
@@ -35,7 +35,7 @@ Library
   Build-Depends: filepath
 
   GHC-Options: -Wall
-  CPP-Options: "-DCABAL_VERSION=1,3,9"
+  CPP-Options: "-DCABAL_VERSION=1,5,1"
   nhc98-Options: -K4M
 
   Exposed-Modules:

Makefile

 
-VERSION=1.3.9
+VERSION=1.5.1
 
 KIND=devel
 #KIND=rc

releaseNotes

@@ -9,7 +9,7 @@ changes and installation instructions.
 
 DOWNLOAD:
 
-The Haskell Cabal has reached development version 1.3.9
+The Haskell Cabal has reached development version 1.5.1
 
 Download the Cabal here (source and debian versions available):
 http://www.haskell.org/cabal/download.html