Verify ART run-tests' standard output and standard error separately.

Introduce expected standard error files for ART run-tests. Collect
tests' standard output and standard error separately and check them
against the corresponding expectation file.

Test: Run ART run-tests on host and device using `testrunner.py`.
Test: atest --test-mapping art:all
Test: atest --test-mapping cts/hostsidetests/jvmti:all
Bug: 171865375
Bug: 147812905
Change-Id: Ie95bec4a4684ff6791d464124ce8976339432d1f
diff --git a/test/1963-add-to-dex-classloader-in-memory/check b/test/1963-add-to-dex-classloader-in-memory/check
index ae1ebf3..d536891 100755
--- a/test/1963-add-to-dex-classloader-in-memory/check
+++ b/test/1963-add-to-dex-classloader-in-memory/check
@@ -14,6 +14,12 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+# Inputs:
+# $1: Test's expected standard output
+# $2: Test's actual standard output
+# $3: Test's expected standard error
+# $4: Test's actual standard error
+
 # Some of our test devices are so old that they don't have memfd_create and are setup in such a way
 # that tmpfile() doesn't work. In these cases this test cannot complete successfully.