Add test on compiling against kotlin.stdlib.jdk7/8 on JDK 9

compiler/testData/javaModules/dependencyOnStdlibJdk78/usage.txt

@@ -0,0 +1 @@
+OK

compiler/testData/javaModules/dependencyOnStdlibJdk78/usage/main.kt

@@ -0,0 +1,15 @@
+import java.util.stream.Stream
+import kotlin.streams.*
+
+// kotlin-stdlib-jdk7
+
+fun testUse(c: AutoCloseable) = c.use {}
+
+// kotlin-stdlib-jdk8
+
+fun testGet(c: MatchGroupCollection) = c.get("")
+
+fun testGetOrDefault(c: Map<out Number, Any>) = c.getOrDefault(42, "")
+fun testRemove(c: MutableMap<out Number, Any>) = c.remove(42, "")
+
+fun testAsSequence(c: Stream<String>) = c.asSequence()

compiler/testData/javaModules/dependencyOnStdlibJdk78/usage/module-info.java

@@ -0,0 +1,5 @@
+module usage {
+    requires kotlin.stdlib;
+    requires kotlin.stdlib.jdk7;
+    requires kotlin.stdlib.jdk8;
+}

compiler/tests/org/jetbrains/kotlin/jvm/compiler/Java9ModulesIntegrationTest.kt

@@ -38,6 +38,7 @@ class Java9ModulesIntegrationTest : AbstractKotlinCompilerIntegrationTest() {
 
         val kotlinOptions = mutableListOf(
                 "-jdk-home", jdk9Home.path,
+                "-jvm-target", "1.8",
                 "-Xmodule-path=$paths"
         )
         if (addModules.isNotEmpty()) {
@@ -252,4 +253,8 @@ class Java9ModulesIntegrationTest : AbstractKotlinCompilerIntegrationTest() {
         module("namedWithExplicitDependency")
         module("namedWithoutExplicitDependency")
     }
+
+    fun testDependencyOnStdlibJdk78() {
+        module("usage", listOf(File("dist/kotlinc/lib/kotlin-stdlib-jdk7.jar"), File("dist/kotlinc/lib/kotlin-stdlib-jdk8.jar")))
+    }
 }