patch applied (cabal): Simplify parameters to defaultMain__

Fri Nov 16 05:23:23 PST 2007 Duncan Coutts * Simplify parameters to defaultMain__ Don't use maybe, just have the callers pass the defaults instead. Eliminate the Maybe PackageDescription parameter and instead just have the called override the readDesc in the UserHooks. This simplifies defaultMainWorker too as it can always just use readDesc. M ./Distribution/Simple.hs -28 +22