Add SPDX license identifier if not present already in source file

Fixes: #9220

libsolutil/Algorithms.h

@@ -14,6 +14,7 @@
 	You should have received a copy of the GNU General Public License
 	along with solidity.  If not, see <http://www.gnu.org/licenses/>.
 */
+// SPDX-License-Identifier: GPL-3.0
 #pragma once
 
 

libsolutil/AnsiColorized.h

@@ -14,6 +14,7 @@
 	You should have received a copy of the GNU General Public License
 	along with solidity.  If not, see <http://www.gnu.org/licenses/>.
 */
+// SPDX-License-Identifier: GPL-3.0
 
 #pragma once
 

libsolutil/Assertions.h

@@ -14,6 +14,7 @@
 	You should have received a copy of the GNU General Public License
 	along with solidity.  If not, see <http://www.gnu.org/licenses/>.
 */
+// SPDX-License-Identifier: GPL-3.0
 /**
  * @file Assertions.h
  * @author Christian <c@ethdev.com>

libsolutil/Common.h

@@ -14,6 +14,7 @@
 	You should have received a copy of the GNU General Public License
 	along with solidity.  If not, see <http://www.gnu.org/licenses/>.
 */
+// SPDX-License-Identifier: GPL-3.0
 /** @file Common.h
  * @author Gav Wood <i@gavwood.com>
  * @date 2014

libsolutil/CommonData.cpp

@@ -14,6 +14,7 @@
 	You should have received a copy of the GNU General Public License
 	along with solidity.  If not, see <http://www.gnu.org/licenses/>.
 */
+// SPDX-License-Identifier: GPL-3.0
 /** @file CommonData.cpp
  * @author Gav Wood <i@gavwood.com>
  * @date 2014

libsolutil/CommonData.h

@@ -14,6 +14,7 @@
 	You should have received a copy of the GNU General Public License
 	along with solidity.  If not, see <http://www.gnu.org/licenses/>.
 */
+// SPDX-License-Identifier: GPL-3.0
 /** @file CommonData.h
  * @author Gav Wood <i@gavwood.com>
  * @date 2014

libsolutil/CommonIO.cpp

@@ -14,6 +14,7 @@
 	You should have received a copy of the GNU General Public License
 	along with solidity.  If not, see <http://www.gnu.org/licenses/>.
 */
+// SPDX-License-Identifier: GPL-3.0
 /** @file CommonIO.cpp
  * @author Gav Wood <i@gavwood.com>
  * @date 2014

libsolutil/CommonIO.h

@@ -14,6 +14,7 @@
 	You should have received a copy of the GNU General Public License
 	along with solidity.  If not, see <http://www.gnu.org/licenses/>.
 */
+// SPDX-License-Identifier: GPL-3.0
 /** @file CommonIO.h
  * @author Gav Wood <i@gavwood.com>
  * @date 2014

libsolutil/Exceptions.cpp

@@ -14,6 +14,7 @@
 	You should have received a copy of the GNU General Public License
 	along with solidity.  If not, see <http://www.gnu.org/licenses/>.
 */
+// SPDX-License-Identifier: GPL-3.0
 
 #include <libsolutil/Exceptions.h>
 

libsolutil/Exceptions.h

@@ -14,6 +14,7 @@
 	You should have received a copy of the GNU General Public License
 	along with solidity.  If not, see <http://www.gnu.org/licenses/>.
 */
+// SPDX-License-Identifier: GPL-3.0
 
 #pragma once
 

libsolutil/FixedHash.h

@@ -14,6 +14,7 @@
 	You should have received a copy of the GNU General Public License
 	along with solidity.  If not, see <http://www.gnu.org/licenses/>.
 */
+// SPDX-License-Identifier: GPL-3.0
 /** @file FixedHash.h
  * @author Gav Wood <i@gavwood.com>
  * @date 2014

libsolutil/IndentedWriter.cpp

@@ -14,6 +14,7 @@
 	You should have received a copy of the GNU General Public License
 	along with solidity.  If not, see <http://www.gnu.org/licenses/>.
 */
+// SPDX-License-Identifier: GPL-3.0
 /**
  * @date 2017
  * Indented text writer.

libsolutil/IndentedWriter.h

@@ -14,6 +14,7 @@
 	You should have received a copy of the GNU General Public License
 	along with solidity.  If not, see <http://www.gnu.org/licenses/>.
 */
+// SPDX-License-Identifier: GPL-3.0
 /**
  * @date 2017
  * Indented text writer.

libsolutil/InvertibleMap.h

@@ -14,6 +14,7 @@
 	You should have received a copy of the GNU General Public License
 	along with solidity.  If not, see <http://www.gnu.org/licenses/>.
 */
+// SPDX-License-Identifier: GPL-3.0
 
 #pragma once
 

libsolutil/IpfsHash.cpp

@@ -14,6 +14,7 @@
 	You should have received a copy of the GNU General Public License
 	along with solidity.  If not, see <http://www.gnu.org/licenses/>.
 */
+// SPDX-License-Identifier: GPL-3.0
 
 #include <libsolutil/IpfsHash.h>
 

libsolutil/IpfsHash.h

@@ -14,6 +14,7 @@
 	You should have received a copy of the GNU General Public License
 	along with solidity.  If not, see <http://www.gnu.org/licenses/>.
 */
+// SPDX-License-Identifier: GPL-3.0
 
 #pragma once
 

libsolutil/JSON.cpp

@@ -14,6 +14,7 @@
 	You should have received a copy of the GNU General Public License
 	along with solidity.  If not, see <http://www.gnu.org/licenses/>.
 */
+// SPDX-License-Identifier: GPL-3.0
 /** @file JSON.cpp
  * @author Alexander Arlt <alexander.arlt@arlt-labs.com>
  * @date 2018

libsolutil/JSON.h

@@ -14,6 +14,7 @@
 	You should have received a copy of the GNU General Public License
 	along with solidity.  If not, see <http://www.gnu.org/licenses/>.
 */
+// SPDX-License-Identifier: GPL-3.0
 /** @file JSON.h
  * @date 2016
  *

libsolutil/Keccak256.cpp

@@ -14,6 +14,7 @@
 	You should have received a copy of the GNU General Public License
 	along with solidity.  If not, see <http://www.gnu.org/licenses/>.
 */
+// SPDX-License-Identifier: GPL-3.0
 /** @file SHA3.cpp
  * @author Gav Wood <i@gavwood.com>
  * @date 2014

libsolutil/Keccak256.h

@@ -14,6 +14,7 @@
 	You should have received a copy of the GNU General Public License
 	along with solidity.  If not, see <http://www.gnu.org/licenses/>.
 */
+// SPDX-License-Identifier: GPL-3.0
 /** @file SHA3.h
  * @author Gav Wood <i@gavwood.com>
  * @date 2014

libsolutil/LazyInit.h

@@ -14,6 +14,7 @@
 	You should have received a copy of the GNU General Public License
 	along with solidity.  If not, see <http://www.gnu.org/licenses/>.
 */
+// SPDX-License-Identifier: GPL-3.0
 
 #pragma once
 

libsolutil/Result.h

@@ -14,6 +14,7 @@
 	You should have received a copy of the GNU General Public License
 	along with solidity.  If not, see <http://www.gnu.org/licenses/>.
 */
+// SPDX-License-Identifier: GPL-3.0
 #pragma once
 
 #include <string>

libsolutil/StringUtils.cpp

@@ -14,6 +14,7 @@
 	You should have received a copy of the GNU General Public License
 	along with solidity.  If not, see <http://www.gnu.org/licenses/>.
 */
+// SPDX-License-Identifier: GPL-3.0
 /** @file StringUtils.h
  * @author Balajiganapathi S <balajiganapathi.s@gmail.com>
  * @date 2017

libsolutil/StringUtils.h

@@ -14,6 +14,7 @@
 	You should have received a copy of the GNU General Public License
 	along with solidity.  If not, see <http://www.gnu.org/licenses/>.
 */
+// SPDX-License-Identifier: GPL-3.0
 /** @file StringUtils.h
  * @author Balajiganapathi S <balajiganapathi.s@gmail.com>
  * @date 2017

libsolutil/SwarmHash.cpp

@@ -14,6 +14,7 @@
 	You should have received a copy of the GNU General Public License
 	along with solidity.  If not, see <http://www.gnu.org/licenses/>.
 */
+// SPDX-License-Identifier: GPL-3.0
 /** @file SwarmHash.cpp
  */
 

libsolutil/SwarmHash.h

@@ -14,6 +14,7 @@
 	You should have received a copy of the GNU General Public License
 	along with solidity.  If not, see <http://www.gnu.org/licenses/>.
 */
+// SPDX-License-Identifier: GPL-3.0
 /** @file SwarmHash.h
  */
 

libsolutil/UTF8.cpp

@@ -14,6 +14,7 @@
 	You should have received a copy of the GNU General Public License
 	along with solidity.  If not, see <http://www.gnu.org/licenses/>.
 */
+// SPDX-License-Identifier: GPL-3.0
 /** @file UTF8.cpp
  * @author Alex Beregszaszi
  * @date 2016

libsolutil/UTF8.h

@@ -14,6 +14,7 @@
 	You should have received a copy of the GNU General Public License
 	along with solidity.  If not, see <http://www.gnu.org/licenses/>.
 */
+// SPDX-License-Identifier: GPL-3.0
 /** @file UTF8.h
  * @author Alex Beregszaszi
  * @date 2016

libsolutil/Visitor.h

@@ -14,6 +14,7 @@
 	You should have received a copy of the GNU General Public License
 	along with solidity.  If not, see <http://www.gnu.org/licenses/>.
 */
+// SPDX-License-Identifier: GPL-3.0
 /**
  * Visitor templates.
  */

libsolutil/Whiskers.cpp

@@ -14,6 +14,7 @@
 	You should have received a copy of the GNU General Public License
 	along with solidity.  If not, see <http://www.gnu.org/licenses/>.
 */
+// SPDX-License-Identifier: GPL-3.0
 /** @file Whiskers.cpp
  * @author Chris <chis@ethereum.org>
  * @date 2017

libsolutil/Whiskers.h

@@ -14,6 +14,7 @@
 	You should have received a copy of the GNU General Public License
 	along with solidity.  If not, see <http://www.gnu.org/licenses/>.
 */
+// SPDX-License-Identifier: GPL-3.0
 /** @file Whiskers.h
  * @author Chris <chis@ethereum.org>
  * @date 2017