Do not add JDK .jar roots if the JDK is modular (9+)

Files like ant-javafx.jar, deploy.jar, java.jnlp.jar, javafx-swt.jar etc
should not be added to the classpath if JDK home points to a JDK 9
distribution

compiler/testData/javaModules/jdkModulesFromNamed/main.txt

@@ -1,4 +1,7 @@
 compiler/testData/javaModules/jdkModulesFromNamed/main/test.kt:11:24: error: unresolved reference: httpserver
     val s: com.sun.net.httpserver.HttpServer? = null
                        ^
+compiler/testData/javaModules/jdkModulesFromNamed/main/test.kt:19:20: error: unresolved reference: javafx
+    val x: com.sun.javafx.tools.ant.AntLog? = null
+                   ^
 COMPILATION_ERROR

compiler/testData/javaModules/jdkModulesFromNamed/main/test.kt

@@ -14,4 +14,8 @@ fun main(args: Array<String>) {
     // Module oracle.desktop
     val a: com.oracle.awt.AWTUtils? = null
     println(a)
+
+    // No module, this class is declared in $JDK_9/lib/ant-javafx.jar
+    val x: com.sun.javafx.tools.ant.AntLog? = null
+    println(x)
 }

compiler/testData/javaModules/jdkModulesFromUnnamed/main.txt

@@ -1 +1,4 @@
-OK
+compiler/testData/javaModules/jdkModulesFromUnnamed/main/test.kt:19:33: error: unresolved reference: ant
+    val x: com.sun.javafx.tools.ant.AntLog? = null
+                                ^
+COMPILATION_ERROR

compiler/testData/javaModules/jdkModulesFromUnnamed/main/test.kt

@@ -14,4 +14,8 @@ fun main(args: Array<String>) {
     // Module oracle.desktop
     val a: com.oracle.awt.AWTUtils? = null
     println(a)
+
+    // No module, this class is declared in $JDK_9/lib/ant-javafx.jar
+    val x: com.sun.javafx.tools.ant.AntLog? = null
+    println(x)
 }