rust: Remove use of `py.eval()`
The previous Rust code allocated an intermediate `Vec`, converted that
to a Python list, then used `eval` to run Python code that converts that
list to a Python set.
rust-cpython exposes Rust bindings for Python sets, let’s use that instead
to construct a set directly.
Differential Revision: https://phab.mercurial-scm.org/D10328
from typing import (
List,
)
version: int
class mpatchError(Exception): ...
def patches(text: bytes, bins: List[bytes]) -> bytes: ...
def patchedsize(orig: int, data: bytes) -> int: ...