message: mark test suite as deprecated
diff: @@ -5,6 +5,8 @@ title: The Rust Test Suite &middot; The Rust Programming Language
  # The Rust test suite
  +## THIS DOCUMENT IS DEPRECATED. PLEASE READ src/test/COMPILER_TESTS.md IN THE COMPILER REPO INSTEAD
  +
  The rust test suite has several sets of tests for different purposes. As the compiler is built over multiple stages, and with varying host and target combinations, debugging and profiling settings, the tests can be run in many different ways.
  ## Recipes
  