Add untracked harmony tests.

This has been deduped against :

libcore/luni/src/test/java/org/apache/harmony/luni/tests
libcore/luni/src/test/java/tests/api/
libcore/harmony-tests/src/test/java/tests/api

This is a minimal change that builds the entire test suite.
Many tests don't pass yet, they will be fixed in follow ups.

Notable tests that haven't been moved:
- ExcludedProxyTest: Might make requests to (now defunct)
  external servers. All of this code is tested in okhttp.
- URLClassLoaderTest: Has a dependency on jetty, tested in
  okhttp.

Notable test cases that haven't been moved:
- URLTest: overlap with okhttp, might make requests to
  external servers.
- ServerSocketTest#test_init: Uses Support_execJava, which
  we don't support yet. Isn't testing anything useful.
- FileTest#testDeleteOnExist: Uses Support_execJava which we don't
  support yet. This is a useful test and we must ressurect it if
  at all possible.

bug: 11650799

Change-Id: Ib277eb0bad465ea72b090168490a1a633611b3f3
258 files changed