moved crates in lib/ to src/, renamed crates, modified some files' text (#660)

moved crates in lib/ to src/, renamed crates, modified some files' text (#660)

cranelift/module/src/lib.rs

@@ -0,0 +1,47 @@
+//! Top-level lib.rs for `cranelift_module`.
+
+#![deny(missing_docs, trivial_numeric_casts, unused_extern_crates)]
+#![warn(unused_import_braces)]
+#![cfg_attr(feature = "std", deny(unstable_features))]
+#![cfg_attr(feature = "clippy", plugin(clippy(conf_file = "../../clippy.toml")))]
+#![cfg_attr(feature = "cargo-clippy", allow(clippy::new_without_default))]
+#![cfg_attr(
+    feature = "cargo-clippy",
+    warn(
+        clippy::float_arithmetic,
+        clippy::mut_mut,
+        clippy::nonminimal_bool,
+        clippy::option_map_unwrap_or,
+        clippy::option_map_unwrap_or_else,
+        clippy::print_stdout,
+        clippy::unicode_not_nfc,
+        clippy::use_self
+    )
+)]
+#![no_std]
+#![cfg_attr(not(feature = "std"), feature(alloc))]
+
+#[cfg(not(feature = "std"))]
+#[macro_use]
+extern crate alloc as std;
+#[cfg(feature = "std")]
+#[macro_use]
+extern crate std;
+
+#[cfg(not(feature = "std"))]
+use hashmap_core::{map as hash_map, HashMap};
+#[cfg(feature = "std")]
+use std::collections::{hash_map, HashMap};
+
+mod backend;
+mod data_context;
+mod module;
+
+pub use crate::backend::Backend;
+pub use crate::data_context::{DataContext, DataDescription, Init};
+pub use crate::module::{
+    DataId, FuncId, FuncOrDataId, Linkage, Module, ModuleError, ModuleNamespace, ModuleResult,
+};
+
+/// Version number of this crate.
+pub const VERSION: &str = env!("CARGO_PKG_VERSION");