Move deprecated kotlin-runtime and reduced runtime for tests into stdlib

Rename mock-runtime-for-test project to kotlin-stdlib:jvm-minimal-for-test

libraries/stdlib/jvm-minimal-for-test/build.gradle.kts

@@ -0,0 +1,56 @@
+import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
+
+description = "Kotlin Mock Runtime for Tests"
+
+apply { plugin("kotlin") }
+
+jvmTarget = "1.6"
+javaHome = rootProject.extra["JDK_16"] as String
+
+dependencies {
+    compileOnly(project(":kotlin-stdlib"))
+}
+
+sourceSets {
+    "main" {
+        java.apply {
+            srcDir(File(buildDir, "src"))
+        }
+    }
+    "test" {}
+}
+
+val copySources by task<Copy> {
+    from(project(":kotlin-stdlib").projectDir.resolve("jvm/runtime"))
+            .include("kotlin/TypeAliases.kt",
+                    "kotlin/text/TypeAliases.kt")
+    from(project(":kotlin-stdlib").projectDir.resolve("src"))
+            .include("kotlin/collections/TypeAliases.kt",
+                    "kotlin/jvm/JvmVersion.kt",
+                    "kotlin/util/Standard.kt",
+                    "kotlin/internal/Annotations.kt",
+                    "kotlin/internal/contracts/ContractBuilder.kt",
+                    "kotlin/internal/contracts/Effect.kt")
+    into(File(buildDir, "src"))
+}
+
+tasks.withType<JavaCompile> {
+    sourceCompatibility = "1.6"
+    targetCompatibility = "1.6"
+}
+
+tasks.withType<KotlinCompile> {
+    dependsOn(copySources)
+    kotlinOptions {
+        freeCompilerArgs += listOf("-module-name", "kotlin-stdlib")
+    }
+}
+
+val jar = runtimeJar {
+    dependsOn(":core:builtins:serialize")
+    from(fileTree("${rootProject.extra["distDir"]}/builtins")) { include("kotlin/**") }
+}
+
+val distDir: String by rootProject.extra
+
+dist(targetName = "kotlin-stdlib-minimal-for-test.jar", targetDir = File(distDir))

libraries/tools/binary-compatibility-validator/src/test/kotlin/org.jetbrains.kotlin.tools.tests/RuntimePublicAPITest.kt

@@ -29,7 +29,7 @@ class RuntimePublicAPITest {
     val testName = TestName()
 
     @Test fun kotlinRuntime() {
-        snapshotAPIAndCompare("../../tools/runtime/build/libs", "kotlin-runtime", listOf("../runtime-declarations.json"), listOf("kotlin.jvm.internal"))
+        snapshotAPIAndCompare("../../stdlib/runtime/build/libs", "kotlin-runtime", listOf("../runtime-declarations.json"), listOf("kotlin.jvm.internal"))
     }
 
     //@Ignore("No more original stdlib jar is produced")