Resume table syntax

[dhil]

This patch updates the handwritten wat/wast programs to use the new resume table syntax.

[frank-emrich]

This fails currently because wasm-merge does not support the new syntax, yet. I will create a PR with binaryen this week to change the syntax there.

[frank-emrich]

The new syntax has landed in binaryen now, and I've updated the harness to use a more recent binaryen, wasmtime, and reference interpreter.

There's also some weirdness about the preprocessor inserting lines starting with # to mark where it did something. In the past they only appeared in the beginning of imports.wat.pp, but now they appear elsewhere. I've switched to just sed-ing all of these lines away. We probably need to do the same in other Makefiles, too.