RFR (M): First JTREG Tsan test

[Man Cao]

Thanks for the instructions!
I assume this is the webrev that you intended to include in last email:
http://cr.openjdk.java.net/~jcbeyler/first_test/webrev.02.

It confused me initially that it has both "@requires vm.compMode == "Xint""
and "@run main/othervm -Xint ...". Can we only have one of them?
"@requires" needs more typing when running the test. But if TSAN supports
C1 or other compilers, it might be easier to modify all "@requires" than
all "@run".

Also, "@compile RacyIntMemberLoopTest.java" seems unnecessary and can be
removed.

-Man