Copyrights fixed

com.oracle.truffle.r.test/src/com/oracle/truffle/r/test/builtins/TestBuiltin_cospi.java

 /*
- * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2013, 2016, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it

com.oracle.truffle.r.test/src/com/oracle/truffle/r/test/builtins/TestBuiltin_sinpi.java

 /*
- * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2013, 2016, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -24,10 +24,9 @@
  */
 package com.oracle.truffle.r.test.builtins;
 
-import org.junit.*;
+import org.junit.Test;
 
-import com.oracle.truffle.r.test.*;
-import com.oracle.truffle.r.test.TestBase.Ignored;
+import com.oracle.truffle.r.test.TestBase;
 
 // Checkstyle: stop line length check
 public class TestBuiltin_sinpi extends TestBase {

com.oracle.truffle.r.test/src/com/oracle/truffle/r/test/builtins/TestBuiltin_tanpi.java

 /*
- * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2013, 2016, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -24,10 +24,9 @@
  */
 package com.oracle.truffle.r.test.builtins;
 
-import org.junit.*;
+import org.junit.Test;
 
-import com.oracle.truffle.r.test.*;
-import com.oracle.truffle.r.test.TestBase.Ignored;
+import com.oracle.truffle.r.test.TestBase;
 
 // Checkstyle: stop line length check
 public class TestBuiltin_tanpi extends TestBase {