wasmtime v14 breaks `-target=wasi`

[ydnar]

Wasmtime v14 introduced a new CLI structure, with two changes relevant to TinyGo:

https://github.com/bytecodealliance/wasmtime/blob/main/RELEASES.md#1400

1. --mapdir=GUEST::HOST becomes --dir=HOST::GUEST: Swap the order of directories in --dir bytecodealliance/wasmtime#7301
2. Arguments after the Wasm module to run are passed to the guest, instead of arguments after --: Redesign Wasmtime's CLI bytecodealliance/wasmtime#6925

[deadprogram]

Tagged to close this issue after next release.

[dgryski]

We still need to update argument construction if we haven't already.

[ydnar]

I think argument construction is correct now.

[dgryski]

Ah yes, thanks. Was trying to figure out why I was getting this warning from wasmtime. Needed to rebase my branch against the latest dev:

~/go/src/github.com/dgryski/bug/intf $ tinygo run -target=wasi main.go
warning: this CLI invocation of Wasmtime will be parsed differently in future
         Wasmtime versions -- see this online issue for more information:
         https://github.com/bytecodealliance/wasmtime/issues/7384

         Wasmtime will now execute with the old (<= Wasmtime 13) CLI parsing,
         however this behavior can also be temporarily configured with an
         environment variable:

         - WASMTIME_NEW_CLI=0 to indicate old semantics are desired and silence this warning, or
         - WASMTIME_NEW_CLI=1 to indicate new semantics are desired and use the latest behavior

[deadprogram]

Completed with v0.31.0 so now closing. Thank you!