find method duplicates: respect varargs mix with constants/params; empty args list (IDEA-56076)

java/java-tests/testData/refactoring/methodDuplicatesMisc/VarVarargsAccess.java.after

@@ -0,0 +1,14 @@
+class A {
+  void bar(int i){
+      m(i, new String[0]);
+      m(i, "a");
+      m(i, "a", "b");
+  }
+
+  void m(int i, String... args) {
+    method(i, args);
+  }
+
+  void method(int i, String... args) {
+  }
+}