Rename 'cton_*' library names to match the 'cretonne_*' crate names.

This renames `cton_frontend` to `cretonne_frontend` and so on.

This fixes the first part of #287.

lib/cretonne/Cargo.toml

@@ -10,9 +10,6 @@ readme = "README.md"
 keywords = ["compile", "compiler", "jit"]
 build = "build.rs"
 
-[lib]
-name = "cretonne"
-
 [dependencies]
 cretonne-entity = { path = "../entity", version = "0.4.4" }
 # It is a goal of the cretonne crate to have minimal external dependencies.

lib/cretonne/src/lib.rs

@@ -39,7 +39,7 @@ pub use write::write_function;
 pub const VERSION: &str = env!("CARGO_PKG_VERSION");
 
 #[macro_use]
-pub extern crate cton_entity as entity;
+pub extern crate cretonne_entity as entity;
 
 #[macro_use]
 pub mod dbg;