patch applied (cabal): Add QA checks for tested-with field

[Duncan Coutts]

Tue Jun  1 10:40:45 PDT 2010  Duncan Coutts <duncan at haskell.org>
  * Add QA checks for tested-with field
  Not allowed invalid version ranges. Also check for use of new syntax.

    M ./Distribution/PackageDescription/Check.hs -3 +50

View patch online:
http://darcs.haskell.org/cgi-bin/darcsweb.cgi?r=cabal;a=darcs_commitdiff;h=20100601174045-adfee-d84f6cf0c70e789433831e5faee12f688467313c.gz