Review exposing more of mscorlib via public API to eliminate monad-native #239

Talked about this with Stephen Toub from the .NET Core team. It's unlikely they'll add APIs; however, if we can make a strong case for a new API, an issue on the GitHub CoreFX repo is the place to do it. VSO create date - 10/8/2015 13:59:00 VSO closed date - 10/13/2015 10:06:00