Alexis Beingessner d1d354bb8f Bug 1674773 - make tsan builds use consistent flags. r=rstewart
This makes --enable-thread-sanitizer turn on Rust tsan (-Zsanitizer=thread).
This requires changing SpiderMonkey tsan to use the tsan rust nightly.

In future changes, more Rust tsan integration will key off of MOZ_TSAN.

Differential Revision: https://phabricator.services.mozilla.com/D96453
2020-11-10 21:11:37 +00:00
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