[Bug sanitizer/59275] Document environment variables used by the sanitizers

[burnus at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59275

--- Comment #3 from Tobias Burnus <burnus at gcc dot gnu.org> ---
(In reply to Kostya Serebryany from comment #1)
> https://code.google.com/p/thread-sanitizer/wiki/Flags

Seems as if the page has changed. Currently, invoke.texi points to:
http://code.google.com/p/data-race-test/wiki/ThreadSanitizer