Fix return type of private members that return anonymous object

#KT-16813 Fixed

Anonymous objects returned from private-in-file members should behave as for private class members

compiler/testData/diagnostics/tests/resolve/anonymousObjectFromTopLevelMember.kt

@@ -0,0 +1,24 @@
+interface IFoo {
+    fun foo()
+}
+
+interface IBar
+
+private fun createAnonObject() =
+        object : IFoo, IBar {
+            override fun foo() {}
+            fun qux() {}
+        }
+
+private val propOfAnonObject = object : IFoo, IBar {
+            override fun foo() {}
+            fun qux() {}
+        }
+
+fun useAnonObject() {
+    createAnonObject().foo()
+    createAnonObject().qux()
+
+    propOfAnonObject.foo()
+    propOfAnonObject.qux()
+}

compiler/testData/diagnostics/tests/resolve/anonymousObjectFromTopLevelMember.txt

@@ -0,0 +1,18 @@
+package
+
+private val propOfAnonObject: propOfAnonObject.<no name provided>
+private fun createAnonObject(): createAnonObject.<no name provided>
+public fun useAnonObject(): kotlin.Unit
+
+public interface IBar {
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}
+
+public interface IFoo {
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public abstract fun foo(): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}