Move tons of stuff into oldstuff/

rustbook/hello_cargo/.gitignore

@@ -1,2 +0,0 @@
-/target/
-Cargo.lock

rustbook/hello_cargo/Cargo.toml

@@ -1,6 +0,0 @@
-[package]
-name = "hello_cargo"
-version = "0.1.0"
-authors = ["Dan Buch <daniel.buch@gmail.com>"]
-
-[dependencies]

rustbook/hello_cargo/src/main.rs

@@ -1,3 +0,0 @@
-fn main() {
-    println!("Hello, world!");
-}