Add missing copyright headers

Author: retronym

src/compiler/scala/tools/nsc/PickleExtractor.scala

@@ -1,3 +1,15 @@
+/*
+ * Scala (https://www.scala-lang.org)
+ *
+ * Copyright EPFL and Lightbend, Inc.
+ *
+ * Licensed under Apache License 2.0
+ * (http://www.apache.org/licenses/LICENSE-2.0).
+ *
+ * See the NOTICE file distributed with this work for
+ * additional information regarding copyright ownership.
+ */
+
 package scala.tools.nsc
 
 import java.io.Closeable

src/compiler/scala/tools/nsc/PipelineMain.scala

@@ -1,7 +1,15 @@
-/* NSC -- new Scala compiler
- * Copyright 2005-2019 LAMP/EPFL
- * @author  Martin Odersky
+/*
+ * Scala (https://www.scala-lang.org)
+ *
+ * Copyright EPFL and Lightbend, Inc.
+ *
+ * Licensed under Apache License 2.0
+ * (http://www.apache.org/licenses/LICENSE-2.0).
+ *
+ * See the NOTICE file distributed with this work for
+ * additional information regarding copyright ownership.
  */
+
 package scala.tools.nsc
 
 import java.io.File

src/reflect/scala/reflect/io/RootPath.scala

@@ -1,3 +1,15 @@
+/*
+ * Scala (https://www.scala-lang.org)
+ *
+ * Copyright EPFL and Lightbend, Inc.
+ *
+ * Licensed under Apache License 2.0
+ * (http://www.apache.org/licenses/LICENSE-2.0).
+ *
+ * See the NOTICE file distributed with this work for
+ * additional information regarding copyright ownership.
+ */
+
 package scala.reflect.io
 
 import java.io.Closeable