[RFC] Sanitizer support

[xiangzhai]

Hi,

There is too much noise coming from the original sanitizer lead False Positive: #553 (comment)

And OpenJDK met the same issue: https://bugs.openjdk.java.net/browse/JDK-8208520

So here comes:

• TSan callbacks in the JVM - TSan provides a callback to handle moved object, and the TSan/Java implementation inserts this callback at appropriate places, such as garbage collectors.
• Symbolization services for TSan reports - The JVM provides a public C++ function (TsanJavaSymbol) that allows a C++ or Java thread to call into the JVM and retrieve the method string associated with that token.

But disadvantage is the implementation is only done for the interpreter.

Any suggestion for dotnet runtime?

\cc @jkotas @steveharter

Thanks,
Leslie Zhai