Use mock JDK in compiler tests where full JDK is not needed

- move some of boxWithStdlib tests under fullJdk/ directory, where they will be
  compiled against the full JDK
- introduce FULL_JDK in-text directive for the reflection test as only 4 tests
  out of 654 needed the full JDK

compiler/testData/codegen/boxWithStdlib/fullJdk/native/staticNative.kt

@@ -0,0 +1,34 @@
+package foo
+
+import kotlin.jvm.*
+import kotlin.platform.*
+
+class WithNative {
+    companion object {
+        platformStatic native fun bar(l: Long, s: String): Double
+    }
+}
+
+object ObjWithNative {
+    platformStatic native fun bar(l: Long, s: String): Double
+}
+
+fun box(): String {
+    var d = 0.0
+    try {
+        d = WithNative.bar(1, "")
+        return "Link error expected"
+    }
+    catch (e: java.lang.UnsatisfiedLinkError) {
+        if (e.getMessage() != "foo.WithNative.bar(JLjava/lang/String;)D") return "Fail 1: " + e.getMessage()
+    }
+
+    try {
+        d = ObjWithNative.bar(1, "")
+        return "Link error expected on object"
+    }
+    catch (e: java.lang.UnsatisfiedLinkError) {
+        if (e.getMessage() != "foo.ObjWithNative.bar(JLjava/lang/String;)D") return "Fail 2: " + e.getMessage()
+    }
+    return "OK"
+}