Support for multi-value wasm (#399)

* deps: bump wasmparser to 0.39.2

This has a bug fix for multi-value Wasm validation that is required for getting
the spec tests passing.

https://github.com/yurydelendik/wasmparser.rs/pull/135

* Update cranelift to 0.46.1 to get multi-value Wasm support

The `cranelift_wasm` APIs had to change a little bit to maintain state necessary
when translating multi-value Wasm blocks. The `translate_module` function now
returns a `ModuleTranslationState` that is borrowed during each function's
translation.

* Enable multi-value proposal's spec tests

This enables all the Wasm multi-value proposal's spec tests other than the ones
that rely on functions having more return values than registers available on the
target. That is not supported by cranelift yet.

* wasmtime-interface-types: always use multi-value Wasm

And remove the return pointer hacks that work around the lack of multi-value.

wasmtime-environ/src/compilation.rs

@@ -7,7 +7,7 @@ use crate::module_environ::FunctionBodyData;
 use alloc::vec::Vec;
 use cranelift_codegen::{binemit, ir, isa, CodegenError};
 use cranelift_entity::PrimaryMap;
-use cranelift_wasm::{DefinedFuncIndex, FuncIndex, WasmError};
+use cranelift_wasm::{DefinedFuncIndex, FuncIndex, ModuleTranslationState, WasmError};
 use serde::{Deserialize, Serialize};
 use std::ops::Range;
 
@@ -164,6 +164,7 @@ pub trait Compiler {
     /// Compile a parsed module with the given `TargetIsa`.
     fn compile_module<'data, 'module>(
         module: &'module module::Module,
+        module_translation: &ModuleTranslationState,
         function_body_inputs: PrimaryMap<DefinedFuncIndex, FunctionBodyData<'data>>,
         isa: &dyn isa::TargetIsa,
         generate_debug_info: bool,