Validators should check that they can compile wasm at startup.

[batconjurer]

On certain machines, the wasm compiler that is used isn't supported. Currently, the failure to compile wasm is only detected the first time a tx with wasm is sent to the ledger. Furthermore, the compilation error leads the validator to reject the state changes and thus its state diverges from other validators.

To mitigate this issue, on startup, validators should attempt to compile wasm to ensure it is supported on their machine.