Fixes some sed errors introduced in c43cfe.

Unfortunately moving libdeno required splitting build.rs into two parts,
one for cli and one for core.

I've also removed the arm64 build - it's complicating things at this
re-org and we're not even testing it. I need to swing back to it and get
tools/test.py running for it.

A new low-level crate with focus on speed. 
This doesn't yet hook into the existing code base.

Adds prebuilt hyperfine and sccache binaries 

Only build test_cc for LSAN

Add Cargo.lock

Only run benchmarks in master

Ref #1087

* Add go net/http benchmark

* Forget about Go. Let's do Rust Hyper

* Update BUILD.gn

* Rename

This reverts commit 8c7416b3.

* Add syscall count tracking for benchmark

* Add fetch_deps thread benchmark

* Switch to `strace -c` for syscall parsing

* Spawn http_server during benchmark (for fetch)

* Rename `benchmarks` to `exec_time_benchmarks`

* Update app_test.js

This reverts commit 3ad48bdb.