Implement serial tests for the ruby test writer
Created attachment 417081 [details] Patch
As requested in https://bugs.webkit.org/show_bug.cgi?id=213373; I've chosen to go with a verbatim copy as deduplicating jsc-stress-test-writer-*.rb is a much larger task and keeping things easily diffable will avoid making things harder for anyone who works on that.
Comment on attachment 417081 [details] Patch r=me
Committed r271427: <https://trac.webkit.org/changeset/271427> All reviewed patches have been landed. Closing bug and clearing flags on attachment 417081 [details].
<rdar://problem/73118359>