Build-time files for typenum crate

These files are generated by the typenum crate's build.rs file. They can be reproduced as follows:

$ cd third_party/rust_crates/vendor/typenum
$ cargo check
$ cd ../..
$ cp ../../out/cargo_target/debug/build/typenum-*/out/consts.rs compat/typenum/
$ cp ../../out/cargo_target/debug/build/typenum-*/out/op.rs compat/typenum/
$ rm vendor/typenum/Cargo.lock