Update dependencies
Merge branch 'master' of http://darcs.haskell.org/git-mirrors/Cabal/
Add a new operating system: iOS
Add --host-os and --host-arch options.
Base install paths on --host-arch and --host-os
Merge branch 'master' of https://github.com/ghc-ios/packages-Cabal
Merge branch 'master' of github.com:ghc-ios/packages-Cabal
Remove duplicate case entry.
Updating Cabal/cabal-install for Cabal/Cabal changes
Infer target platform from ghc --info
Merge branch 'master-merge-ios'
Merged changes for iOS & cross-compiling