4a24f10ac6
This moves all the basic random value generation into the Rand instances for each type and then removes the `gen_int`, `gen_char` (etc) methods on RngUtil, leaving only the generic `gen` and the more specialised methods. Also, removes some imports that are redundant due to a `use core::prelude::*` statement.
Right now (2013-04-11), only one package works, the branch of rust-sdl at: https://github.com/catamorphism/rust-sdl/tree/new-rustpkg and only one command works, "build".