2ce2dd0203
When running in embedded environments, threads creation is sometimes undesirable. This adds a feature to toggle wasmtime's internal thread creation for parallel compilation.
This is the wasmtime-environ crate, which contains the implementations
of the ModuleEnvironment and FuncEnvironment traits from
cranelift-wasm. They effectively
implement an ABI for basic wasm compilation that defines how linear memories
are allocated, how indirect calls work, and other details. They can be used
for JITing, native object files, or other purposes.