Ship all files needed to build Tor with rust

  o Minor bugfixes (distribution, compilation):

    - Actually include all of our Rust source in our source

      distributions. (Previously, a few of the files were accidentally

      omitted.) Fixes bug 25732; bugfix on 0.3.3.2-alpha.

	src/rust/external/external.rs \

	src/rust/external/lib.rs \

	src/rust/protover/Cargo.toml \

	src/rust/protover/errors.rs \

	src/rust/protover/protoset.rs \

	src/rust/protover/ffi.rs \

	src/rust/protover/lib.rs \

	src/rust/protover/protover.rs \

	src/rust/tor_rust/lib.rs \

	src/rust/tor_util/Cargo.toml \

	src/rust/tor_util/ffi.rs \

	src/rust/tor_util/lib.rs

	src/rust/tor_util/lib.rs \

	src/rust/tor_util/strings.rs