Fix style and copyrights.

Author: fangerer

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/modules/CodecsModuleBuiltins.java

@@ -578,7 +578,7 @@ private String castToString(Object encodingObj) {
         }
 
         private boolean castToBoolean(VirtualFrame frame, Object object) {
-            if(object == PNone.NO_VALUE) {
+            if (object == PNone.NO_VALUE) {
                 return false;
             }
             if (castToBooleanNode == null) {

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/objects/cext/common/CExtCommonNodes.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2019, 2020, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * The Universal Permissive License (UPL), Version 1.0
@@ -123,7 +123,7 @@ static Object doReceiverCached(CExtContext nativeContext, String name,
         @Specialization(replaces = {"doReceiverCachedIdentity", "doReceiverCached"}, //
                         limit = "1")
         static Object doWithContext(CExtContext nativeContext, String name,
-                        @CachedLibrary("nativeContext.getLLVMLibrary()") @SuppressWarnings("unused") InteropLibrary interopLib,
+                        @CachedLibrary("nativeContext.getLLVMLibrary()") InteropLibrary interopLib,
                         @Cached PRaiseNode raiseNode) {
             return importCAPISymbol(raiseNode, interopLib, nativeContext.getLLVMLibrary(), name);
         }

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/objects/cext/common/CExtToNativeNode.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2019, 2020, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * The Universal Permissive License (UPL), Version 1.0
@@ -41,7 +41,6 @@
 package com.oracle.graal.python.builtins.objects.cext.common;
 
 import com.oracle.graal.python.nodes.PNodeWithContext;
-import com.oracle.graal.python.runtime.PythonContext;
 
 public abstract class CExtToNativeNode extends PNodeWithContext {