patch applied (cabal): Make parsing of licenses more robust

[Duncan Coutts]

Fri Mar 21 11:13:00 PDT 2008  Duncan Coutts <duncan at haskell.org>
  * Make parsing of licenses more robust
  Added an UnknownLicense String constructor so that we can remember
  unknown license names and report them and prevent them from being
  uploaded to hackage, but not fail hard with a parse error upon
  encountering an unknown license. This does not add any new licesnes
  or and new valid parses of existing licenses. The parsing phase
  now allows an optional version like "GPL-3" however that would still
  be classified as an unknown license at the moment. The point is it's
  no longer a parse error but a semantic error instead.

    M ./Distribution/License.hs -4 +36

View patch online:

  http://darcs.haskell.org/cabal/_darcs/patches/20080321181300-adfee-0fd4c330dddc32d1fe320f678164e9bd14f77115.gz