When this benchmark was imported from crypto-bench to *ring* and
ported from the libtest `#[bench]` framework to Criterion.rs, we
kept the macro-based structure from the original benchmarks. However,
Criterion.rs actually supports the kind of parameterized benchmarking
we do much more naturally, and so we don't need the macros. Get rid of
them.
Also remove distinction between TLS 1.2 and TLS 1.3 AAD. These
benchmarks were originally written long ago when the TLS 1.3 draft
specified a different AAD format.
I hope this will serve as a better example of how to write such
benchmarks than it previously did.
Move the Criterion.rs dependency out of *ring* into a new `ring-benches`
crate. This speeds up many build scenerios by eliminating a bunch of
dependencies from *ring*'s dependency tree for `cargo test`.
