Add missing licenses and enable check in cpplint

CPPLINT.cfg

@@ -1,2 +1,2 @@
 set noparent
-filter=-build/header_guard,-legal/copyright,-build/include_subdir,-runtime/references,-readability/casting,-runtime/int,-build/include,-build/c++11,-build/c++14
+filter=-build/header_guard,-build/include_subdir,-runtime/references,-readability/casting,-runtime/int,-build/include,-build/c++11,-build/c++14

adapter/test/adapter_test_utils.h

@@ -1,3 +1,15 @@
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+ * Distributed under BSD 3-Clause license.                                   *
+ * Copyright by The HDF Group.                                               *
+ * Copyright by the Illinois Institute of Technology.                        *
+ * All rights reserved.                                                      *
+ *                                                                           *
+ * This file is part of Hermes. The full Hermes copyright notice, including  *
+ * terms governing use, modification, and redistribution, is contained in    *
+ * the COPYING file, which can be found at the top directory. If you do not  *
+ * have access to the file, you may request a copy from help@hdfgroup.org.   *
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
 #ifndef HERMES_ADAPTER_TEST_UTILS_H
 #define HERMES_ADAPTER_TEST_UTILS_H
 #include <cmath>

adapter/test/hermes_daemon.cc

@@ -1,3 +1,15 @@
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+ * Distributed under BSD 3-Clause license.                                   *
+ * Copyright by The HDF Group.                                               *
+ * Copyright by the Illinois Institute of Technology.                        *
+ * All rights reserved.                                                      *
+ *                                                                           *
+ * This file is part of Hermes. The full Hermes copyright notice, including  *
+ * terms governing use, modification, and redistribution, is contained in    *
+ * the COPYING file, which can be found at the top directory. If you do not  *
+ * have access to the file, you may request a copy from help@hdfgroup.org.   *
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
 #include <cstdlib>
 
 #include <mpi.h>

adapter/test/stdio/stdio_adapter_shared_test.cpp

@@ -1,3 +1,15 @@
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+ * Distributed under BSD 3-Clause license.                                   *
+ * Copyright by The HDF Group.                                               *
+ * Copyright by the Illinois Institute of Technology.                        *
+ * All rights reserved.                                                      *
+ *                                                                           *
+ * This file is part of Hermes. The full Hermes copyright notice, including  *
+ * terms governing use, modification, and redistribution, is contained in    *
+ * the COPYING file, which can be found at the top directory. If you do not  *
+ * have access to the file, you may request a copy from help@hdfgroup.org.   *
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
 TEST_CASE("SharedSTDIORead", "[process=" + std::to_string(info.comm_size) +
                                  "]"
                                  "[operation=batched_read]"

adapter/test/vfd/hermes_vfd_test.cc

@@ -1,3 +1,15 @@
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+ * Distributed under BSD 3-Clause license.                                   *
+ * Copyright by The HDF Group.                                               *
+ * Copyright by the Illinois Institute of Technology.                        *
+ * All rights reserved.                                                      *
+ *                                                                           *
+ * This file is part of Hermes. The full Hermes copyright notice, including  *
+ * terms governing use, modification, and redistribution, is contained in    *
+ * the COPYING file, which can be found at the top directory. If you do not  *
+ * have access to the file, you may request a copy from help@hdfgroup.org.   *
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
 #include <stdio.h>
 #include <string.h>
 #include <stdlib.h>

benchmarks/dpe_bench.cc

@@ -1,3 +1,15 @@
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+ * Distributed under BSD 3-Clause license.                                   *
+ * Copyright by The HDF Group.                                               *
+ * Copyright by the Illinois Institute of Technology.                        *
+ * All rights reserved.                                                      *
+ *                                                                           *
+ * This file is part of Hermes. The full Hermes copyright notice, including  *
+ * terms governing use, modification, and redistribution, is contained in    *
+ * the COPYING file, which can be found at the top directory. If you do not  *
+ * have access to the file, you may request a copy from help@hdfgroup.org.   *
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
 #include <iostream>
 #include <random>
 #include <map>

src/hermes_status.h

@@ -1,3 +1,15 @@
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+ * Distributed under BSD 3-Clause license.                                   *
+ * Copyright by The HDF Group.                                               *
+ * Copyright by the Illinois Institute of Technology.                        *
+ * All rights reserved.                                                      *
+ *                                                                           *
+ * This file is part of Hermes. The full Hermes copyright notice, including  *
+ * terms governing use, modification, and redistribution, is contained in    *
+ * the COPYING file, which can be found at the top directory. If you do not  *
+ * have access to the file, you may request a copy from help@hdfgroup.org.   *
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
 #ifndef HERMES_STATUS_H_
 #define HERMES_STATUS_H_