* WASM runtime switch to import memory
Up to now runtimes have exported their memory. To unify it with
sandboxing, this pr switches runtimes to import memory as well.
From a functional perspective, exporting/importing memory makes no
difference to the runtime.
To provide backwards compatibility, WASM exported memory is still supported.
* Revert debug stuff
* Revert some stuff
* Make debug builds more usable
This pr makes debug builds more usable in terms of `cargo run -- --dev`.
1. `--dev` activates `--execution native`, iff `--execution` is not
given or no sub `--execution-*` is given.
2. It was probably a mistake to compile WASM in debug for a debug build.
So, we now build the WASM binary always as `release` (if not requested
differently by the user). So, we trade compilation time for a better
debug experience.
* Make sure we only overwrite default values
* Make it work
* Apply suggestion
Bastian Köcher