patch applied (packages/Cabal): Add VersionIntervals, a view of VersionRange

[Ian Lynagh]

Tue Dec  2 06:10:40 PST 2008  Duncan Coutts <duncan at haskell.org>
  * Add VersionIntervals, a view of VersionRange
  as a sequence of non-overlapping intervals. This provides a canonical
  representation for the semantics of a VersionRange. This makes several
  operations easier.

    M ./Distribution/Version.hs +202

View patch online:
http://darcs.haskell.org/packages/Cabal/_darcs/patches/20081202141040-adfee-c0fa38a681faafe7b5dee32ad90aede3ba6258e3.gz