* executor: Use non wasmi-specific execution in tests.
* executor: Move all runtime execution tests into tests file.
* executor: Use test_case macro to easily execute tests with different
Wasm execution methods.
* executor: Convert errors to strings with Display, not Debug.
* node-executor: Rewrite benchmarks with criterion.
They were not passing compilation before and criterion seems to be more
widely used in Substrate.
* executor: Begin implementation of Wasm runtime.
The implementation demonstrates the outline of the execution, but does
not link against the external host functions.
* executor: Define and implement basic FunctionExecutor.
The SandboxCapabilities::invoke is still left unimplemented.
* executor: Implement host function trampoline generation.
* executor: Instantiate and link runtime module to env module.
* executor: Provide input data during wasmtime execution.
* executor: Implement SandboxCapabilites::invoke for wasmtime executor.
* executor: Integrate and test wasmtime execution method.
* executor: Improve FunctionExecution error messages.
* Scope the unsafe blocks to be smaller.
* Rename TrampolineState to EnvState.
* Let EnvState own its own compiler instead of unsafe lifetime cast.
* Refactor out some common wasmi/wasmtime logic.
* Typos and cosmetic changes.
* More trampoline comments.
* Cargo.lock update.
* cli: CLI option for running Substrate with compiled Wasm execution.
* executor: Switch dependency from fork to official wasmtime repo.
* Quiet down cranelift logs.
* Explicitly catch panics during host calls.
We do this to ensure that panics do not cross language boundaries.
* Additional checks and clarifications in make_trampoline.
* Fixes after merge from master and panic safety for wasmtime
instantiation.
Jim Posen