8186931: jdk.security.jarsigner package is missing package summary

Reviewed-by: mchung, mullan

src/jdk.jartool/share/classes/jdk/security/jarsigner/package-info.java

+/*
+ * Copyright (c) 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.
+ */
+
+/**
+ * This package defines APIs for signing jar files.
+ */
+package jdk.security.jarsigner;

src/jdk.jartool/share/classes/module-info.java

 /*
- * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2014, 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
@@ -27,6 +27,7 @@
  * Defines tools for manipulating Java Archive (JAR) files,
  * including the <em>{@index jar jar tool}</em> and
  * <em>{@index jarsigner jarsigner tool}</em> tools.
+ * This module also defines APIs for signing JAR files.
  *
  * <p> This module provides the equivalent of command-line access to
  * <em>jar</em> via the {@link java.util.spi.ToolProvider ToolProvider} SPI.

src/jdk.security.jgss/share/classes/com/sun/security/jgss/package-info.java

 /*
- * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2013, 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
@@ -23,4 +23,8 @@
  * questions.
  */
 
+/**
+ * This package defines classes and interfaces for the JDK extensions
+ * to the GSS-API.
+ */
 package com.sun.security.jgss;

src/jdk.security.jgss/share/classes/module-info.java

 /*
- * Copyright (c) 2014, 2016, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2014, 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
@@ -24,7 +24,7 @@
  */
 
 /**
- * Defines Java extensions to the GSS-API and an implementation of the SASL
+ * Defines JDK extensions to the GSS-API and an implementation of the SASL
  * GSSAPI mechanism.
  *
  * @moduleGraph