Build fully_static linux bindists for the wasm backend
I've just managed to build fully_static
x86_64-linux bindists for wasm backend and wasi-sdk with alpine, and confirmed they work out of the box across a large number of distros (including NixOS, without needing to patchelf). Compared to the current ubuntu-based build, it seems to me that this is a better way of redistributing binary artifacts in https://gitlab.haskell.org/ghc/ghc-wasm-meta.