Implement runtime version checks in set_code (#4548)

* Implement runtime version checks in `set_code`

Check that the new runtime code given to `set_code` fullfills some
requirements:

- `spec_name` matches
- `spec_version` does not decreases
- `impl_version` does not decreases
- Either `spec_version` and `impl_version` increase

* Make tests almost work

* Some fixes after master merge

* Fix tests

* Add missed file

* Make depedency check happy?

* Remove leftover `sc-executor`

* AHHHHH

* Reset debug stuff

* Remove some 'static

* More 'static

* Some docs

* Update `Cargo.lock`

substrate/primitives/runtime-interface/test/src/lib.rs

@@ -30,7 +30,6 @@ fn call_wasm_method<HF: HostFunctionsT>(method: &str) -> TestExternalities {
 	let mut ext_ext = ext.ext();
 
 	sc_executor::call_in_wasm::<
-		_,
 		(
 			HF,
 			sp_io::SubstrateHostFunctions,