inline: check accessibility according to the file scope (IDEA-152181)

java/java-tests/testData/refactoring/inlineMethod/PrivateFieldInSuperClassInSameFile.java

@@ -0,0 +1,15 @@
+class Test {
+  class A {
+    private Integer i = 0;
+
+    void foo() {
+      i.toString();
+    }
+  }
+
+  class B extends A {
+    void bar(A a) {
+      a.fo<caret>o();
+    }
+  }
+}