Don't mix every http request in with the tests output.
Don't print that the file servers are starting unless
-vv flag is passed.

Capture the output of run with run_output which returns
stdout, stderr and exit_code. Test against this rather
than relying on sys.exit.

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.