When targeting musl, libunwind is used for the `__register_frame` implementation. Unlike when targeting libgcc which expects an entire frame table, the libunwind implementation expects a single FDE. This change ensures Wasmtime registers each individual FDE when targeting musl. Fixes #1904.
This is the wasmtime-jit crate, which contains JIT-based execution
for wasm, using the wasm ABI defined by wasmtime-environ and the
runtime support provided by wasmtime-runtime.
Most users will want to use the main wasmtime crate instead of using this
crate directly.