java completion: prefer similar names with mismatching case (IDEA-188085)

java/java-tests/testData/codeInsight/completion/smartType/second/PreferChainFieldSuggestionByExpectedName.java

@@ -0,0 +1,16 @@
+class Bar {
+  Goo a;
+  Goo b;
+  Goo superclass;
+}
+class Goo {}
+
+class Foo {
+  Bar b;
+
+  void method(Goo superClass) {} //note case difference
+
+  {
+    method(<caret>)
+  }
+}