KT-2257 fix. private namespace visibility becomes protected in java land

compiler/tests/org/jetbrains/jet/codegen/ClassGenTest.java

@@ -498,4 +498,10 @@ public class ClassGenTest extends CodegenTestCase {
         //System.out.println(generateToText());
         blackBox();
     }
+
+    public void testKt2257() {
+        createEnvironmentWithMockJdkAndIdeaAnnotations(ConfigurationKind.JDK_ONLY);
+        blackBoxMultiFile("regressions/kt2257_1.kt", "regressions/kt2257_2.kt");
+        System.out.println(generateToText());
+    }
 }

compiler/tests/org/jetbrains/jet/codegen/PropertyGenTest.java

@@ -81,7 +81,7 @@ public class PropertyGenTest extends CodegenTestCase {
         final Field field = fields[0];
         field.setAccessible(true);
         assertEquals("x", field.getName());
-        assertEquals(Modifier.PUBLIC | Modifier.STATIC | Modifier.FINAL, field.getModifiers());
+        assertEquals(Modifier.PROTECTED | Modifier.STATIC | Modifier.FINAL, field.getModifiers());
         assertEquals(239, field.get(null));
     }