[WIP] Graal on OkHttp 4.0

[yschimke]

Mainly posting to explore options, not a clean review and not going anywhere soon.

Issues:

1. Doesn't run with Conscrypt
2. Requires SunEC provider from a local install, or
3. Maybe bouncy castle with advanced setup

$ time ./okcurl -v https://api.twitter.com/robots.txt
# Used for Google app indexing. See https://developers.google.com/app-indexing/webmasters/server
User-agent: Googlebot
Disallow:

User-agent: *
Disallow: /http/1.1
TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
./okcurl -v https://api.twitter.com/robots.txt  0.02s user 0.01s system 11% cpu 0.267 total

[yschimke]

Closing, leaving as a record for status.