search java direct inheritors using javac indices (initial):

* use only one search adapter
* resolve anonymous child classes (e.g A$2$B)
* lazy iterate over candidates

java/java-tests/testData/compiler/bytecodeReferences/testHierarchy/Baz.java

@@ -0,0 +1,15 @@
+public class Baz {
+
+  void m() {
+    new Runnable() {
+      public void run() {
+
+        class FooImpl2 extends Foo {
+
+        }
+
+      }
+    };
+  }
+
+}