8187443: Forest Consolidation: Move files to unified layout

Reviewed-by: darcy, ihse

src/java.base/share/classes/java/io/package-info.java

@@ -0,0 +1,51 @@
+/*
+ * Copyright (c) 1998, 2017, 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
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * Provides for system input and output through data streams,
+ * serialization and the file system.
+ *
+ * Unless otherwise noted, passing a null argument to a constructor or
+ * method in any class or interface in this package will cause a
+ * {@code NullPointerException} to be thrown.
+ *
+ * <h2>Package Specification</h2>
+ * <ul>
+ *   <li><a href="{@docRoot}/../specs/serialization/index.html">
+ *       Java Object Serialization Specification </a>
+ * </ul>
+ *
+ * <h2>Related Documentation</h2>
+ *
+ * For overviews, tutorials, examples, guides, and tool documentation,
+ * please see:
+ * <ul>
+ *     <li>{@extLink serialver_tool_reference The serialver tool}</li>
+ *     <li>{@extLink serialization_guide Serialization Documentation}</li>
+ * </ul>
+ *
+ * @since 1.0
+ */
+package java.io;