wasm: support passing packed struct over C-ABI

This also adds support loading a runtime pointer from a packed struct.
Also, this commit improves many utility functions such as `trunc` and
`intcast` to also support non-integer types such as booleans.
a314e86772Luuk de Gram committed on 11/30/2022, 4:56:02 PMparent4af5bbd
2 files changedLine totals unavailable