Multiplatform test annotations

Actual annotations are provided in kotlin-test-junit on JVM side
and in kotlin-test-js on JS side.

#KT-19696

libraries/kotlin.test/common/src/main/kotlin/org/junit/Test.kt

@@ -1,4 +1,7 @@
 package org.junit
 
 @Suppress("NO_ACTUAL_FOR_EXPECT")
+@Deprecated("Use 'Test' from kotlin.test package",
+            replaceWith = ReplaceWith("kotlin.test.Test", "kotlin.test.Test"),
+            level = DeprecationLevel.WARNING)
 expect annotation class Test()

libraries/kotlin.test/common/src/test/kotlin/kotlin/test/tests/AnnotationsTest.kt

@@ -0,0 +1,45 @@
+/*
+ * Copyright 2010-2017 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package kotlin.test.tests
+
+import kotlin.test.*
+
+private var value = 5
+
+class AnnotationsTest {
+
+    @BeforeTest fun setup() {
+        value *= 2
+    }
+
+    @AfterTest fun teardown() {
+        value /= 2
+    }
+
+    @Test fun testValue() {
+        assertEquals(10, value)
+    }
+
+    @Test fun testValueAgain() {
+        assertEquals(10, value)
+    }
+
+    @Ignore @Test fun testValueWrong() {
+        assertEquals(20, value)
+    }
+
+}

libraries/kotlin.test/common/src/test/kotlin/kotlin/test/tests/BasicAssertionsTest.kt

@@ -1,7 +1,6 @@
 package kotlin.test.tests
 
 import kotlin.test.*
-import org.junit.Test
 
 class BasicAssertionsTest {
     @Test