patch applied (packages/Cabal): Bump version to 1.5.1 -- the next development series

[Ian Lynagh]

Sat Mar 29 11:11:46 PDT 2008  Duncan Coutts <duncan at haskell.org>
  * Bump version to 1.5.1 -- the next development series
  Though we should try and limit divergence until 1.4.0 is released.

    M ./Cabal.cabal -2 +2
    M ./Makefile -1 +1
    M ./releaseNotes -1 +1

View patch online:
http://darcs.haskell.org/packages/Cabal/_darcs/patches/20080329181146-adfee-64736be8e6935588346ed572ee0b404f30359803.gz