patch applied (cabal): Make an Arch enum like we have for OS and use it

Tue Mar 4 12:38:02 PST 2008 Duncan Coutts * Make an Arch enum like we have for OS and use it We get more robust parsing and comparisons of arch names this way and it'll allows us to detect and warn about unknown arches. M ./Distribution/PackageDescription.hs -3 +3 M ./Distribution/PackageDescription/Configuration.hs -6 +6 M ./Distribution/Simple/Configure.hs -3 +3 M ./Distribution/System.hs -10 +62 View patch online: http://darcs.haskell.org/cabal/_darcs/patches/20080304203802-adfee-a3a00b42d...