Do not return nested/local classes as a part of package fragment

#KT-13757 Fixed

compiler/testData/compileKotlinAgainstCustomBinaries/prohibitNestedClassesByDollarName/library/test/JavaOuter.java

@@ -0,0 +1,5 @@
+package test;
+
+public class JavaOuter {
+    public static class JavaNested {}
+}

compiler/testData/compileKotlinAgainstCustomBinaries/prohibitNestedClassesByDollarName/library/test/Outer.kt

@@ -0,0 +1,5 @@
+package test
+
+class Outer {
+    class Nested
+}

compiler/testData/compileKotlinAgainstCustomBinaries/prohibitNestedClassesByDollarName/main.kt

@@ -0,0 +1,10 @@
+import test.Outer
+import test.JavaOuter
+
+fun main(args: Array<String>) {
+    Outer.Nested()
+    test.`Outer$Nested`()
+
+    JavaOuter.JavaNested()
+    test.`JavaOuter$JavaNested`()
+}

compiler/testData/compileKotlinAgainstCustomBinaries/prohibitNestedClassesByDollarName/output.txt

@@ -0,0 +1,7 @@
+compiler/testData/compileKotlinAgainstCustomBinaries/prohibitNestedClassesByDollarName/main.kt:6:10: error: unresolved reference: `Outer$Nested`
+    test.`Outer$Nested`()
+         ^
+compiler/testData/compileKotlinAgainstCustomBinaries/prohibitNestedClassesByDollarName/main.kt:9:10: error: unresolved reference: `JavaOuter$JavaNested`
+    test.`JavaOuter$JavaNested`()
+         ^
+COMPILATION_ERROR

compiler/tests/org/jetbrains/kotlin/jvm/compiler/CompileKotlinAgainstCustomBinariesTest.java

@@ -386,4 +386,21 @@ public class CompileKotlinAgainstCustomBinariesTest extends TestCaseWithTmpdir {
         File library2 = compileLibrary("library-2");
         doTestWithTxt(usage, library2);
     }
+
+    public void testProhibitNestedClassesByDollarName() throws Exception {
+        File library = compileLibrary("library");
+
+        KotlinTestUtils.compileJavaFiles(
+                Collections.singletonList(
+                        new File(getTestDataDirectory() + "/library/test/JavaOuter.java")
+                ),
+                Arrays.asList("-d", tmpdir.getPath())
+        );
+
+        Pair<String, ExitCode> outputMain = compileKotlin("main.kt", tmpdir, tmpdir, library);
+
+        KotlinTestUtils.assertEqualsToFile(
+                new File(getTestDataDirectory(), "output.txt"), normalizeOutput(outputMain)
+        );
+    }
 }