This was added long ago at this point to assist with caching, but caching has moved to a different level such that this wonky second level of a `Module` isn't necessary. This commit removes the `ModuleLocal` type to simplify accessors and generally make it easier to work with.
This is the wasmtime-jit crate, which contains JIT-based execution
for wasm, using the wasm ABI defined by wasmtime-environ and the
runtime support provided by wasmtime-runtime.
Most users will want to use the main wasmtime crate instead of using this
crate directly.