Fix/streamline license headers

Now all license headers use SPDX and LGPL-3.0-or-later.

ChangeLog:

	* vir/detail.h: License header and copyright date update.
	* vir/simd.h: Likewise.
	* vir/simd_benchmarking.h: Likewise.
	* vir/simd_bit.h: Likewise.
	* vir/simd_bitset.h: Likewise.
	* vir/simd_cast.h: Likewise.
	* vir/simd_concepts.h: Likewise.
	* vir/simd_float_ops.h: Likewise.
	* vir/simd_resize.h: Likewise.
	* vir/simdize.h: Likewise.
	* vir/struct_reflect.h: Likewise.
	* vir/test.cpp: Likewise.

vir/detail.h

@@ -1,21 +1,7 @@
-/*
-    Copyright © 2022 GSI Helmholtzzentrum fuer Schwerionenforschung GmbH
-                     Matthias Kretz <[email protected]>
-
-    This program is free software: you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as
-    published by the Free Software Foundation, either version 3 of
-    the License, or (at your option) any later version.
-
-    This program 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 Lesser General Public License for more details.
-
-    You should have received a copy of the GNU Lesser General Public
-    License along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-*/
+/* SPDX-License-Identifier: LGPL-3.0-or-later */
+/* Copyright © 2022-2023 GSI Helmholtzzentrum fuer Schwerionenforschung GmbH
+ *                       Matthias Kretz <[email protected]>
+ */
 
 #ifndef VIR_DETAILS_H
 #define VIR_DETAILS_H

vir/simd.h

@@ -1,21 +1,7 @@
-/*
-    Copyright © 2022 GSI Helmholtzzentrum fuer Schwerionenforschung GmbH
-                     Matthias Kretz <[email protected]>
-
-    This program is free software: you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as
-    published by the Free Software Foundation, either version 3 of
-    the License, or (at your option) any later version.
-
-    This program 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 Lesser General Public License for more details.
-
-    You should have received a copy of the GNU Lesser General Public
-    License along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-*/
+/* SPDX-License-Identifier: LGPL-3.0-or-later */
+/* Copyright © 2022-2023 GSI Helmholtzzentrum fuer Schwerionenforschung GmbH
+ *                       Matthias Kretz <[email protected]>
+ */
 
 #ifndef VIR_SIMD_H_
 #define VIR_SIMD_H_

vir/simd_benchmarking.h

@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: BSD-3-Clause */
+/* SPDX-License-Identifier: LGPL-3.0-or-later */
 /* Copyright © 2019-2023 GSI Helmholtzzentrum fuer Schwerionenforschung GmbH
  *                       Matthias Kretz <[email protected]>
  */

vir/simd_bit.h

@@ -1,21 +1,7 @@
-/*
-    Copyright © 2022 GSI Helmholtzzentrum fuer Schwerionenforschung GmbH
-                     Matthias Kretz <[email protected]>
-
-    This program is free software: you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as
-    published by the Free Software Foundation, either version 3 of
-    the License, or (at your option) any later version.
-
-    This program 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 Lesser General Public License for more details.
-
-    You should have received a copy of the GNU Lesser General Public
-    License along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-*/
+/* SPDX-License-Identifier: LGPL-3.0-or-later */
+/* Copyright © 2022-2023 GSI Helmholtzzentrum fuer Schwerionenforschung GmbH
+ *                       Matthias Kretz <[email protected]>
+ */
 
 #ifndef VIR_SIMD_BIT_H
 #define VIR_SIMD_BIT_H

vir/simd_bitset.h

@@ -1,21 +1,7 @@
-/*
-    Copyright © 2022 GSI Helmholtzzentrum fuer Schwerionenforschung GmbH
-                     Matthias Kretz <[email protected]>
-
-    This program is free software: you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as
-    published by the Free Software Foundation, either version 3 of
-    the License, or (at your option) any later version.
-
-    This program 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 Lesser General Public License for more details.
-
-    You should have received a copy of the GNU Lesser General Public
-    License along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-*/
+/* SPDX-License-Identifier: LGPL-3.0-or-later */
+/* Copyright © 2022-2023 GSI Helmholtzzentrum fuer Schwerionenforschung GmbH
+ *                       Matthias Kretz <[email protected]>
+ */
 
 #ifndef VIR_SIMD_BITSET_H_
 #define VIR_SIMD_BITSET_H_

vir/simd_cast.h

@@ -1,21 +1,7 @@
-/*
-    Copyright © 2022 GSI Helmholtzzentrum fuer Schwerionenforschung GmbH
-                     Matthias Kretz <[email protected]>
-
-    This program is free software: you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as
-    published by the Free Software Foundation, either version 3 of
-    the License, or (at your option) any later version.
-
-    This program 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 Lesser General Public License for more details.
-
-    You should have received a copy of the GNU Lesser General Public
-    License along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-*/
+/* SPDX-License-Identifier: LGPL-3.0-or-later */
+/* Copyright © 2022-2023 GSI Helmholtzzentrum fuer Schwerionenforschung GmbH
+ *                       Matthias Kretz <[email protected]>
+ */
 
 #ifndef VIR_SIMD_CAST_H
 #define VIR_SIMD_CAST_H

vir/simd_concepts.h

@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: BSD-3-Clause */
+/* SPDX-License-Identifier: LGPL-3.0-or-later */
 /* Copyright © 2023 GSI Helmholtzzentrum fuer Schwerionenforschung GmbH
  *                  Matthias Kretz <[email protected]>
  */

vir/simd_float_ops.h

@@ -1,21 +1,7 @@
-/*
-    Copyright © 2022 GSI Helmholtzzentrum fuer Schwerionenforschung GmbH
-                     Matthias Kretz <[email protected]>
-
-    This program is free software: you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as
-    published by the Free Software Foundation, either version 3 of
-    the License, or (at your option) any later version.
-
-    This program 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 Lesser General Public License for more details.
-
-    You should have received a copy of the GNU Lesser General Public
-    License along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-*/
+/* SPDX-License-Identifier: LGPL-3.0-or-later */
+/* Copyright © 2022-2023 GSI Helmholtzzentrum fuer Schwerionenforschung GmbH
+ *                       Matthias Kretz <[email protected]>
+ */
 
 #ifndef VIR_SIMD_FLOAT_OPS_H_
 #define VIR_SIMD_FLOAT_OPS_H_

vir/simd_resize.h

@@ -1,21 +1,7 @@
-/*
-    Copyright © 2022 GSI Helmholtzzentrum fuer Schwerionenforschung GmbH
-                     Matthias Kretz <[email protected]>
-
-    This program is free software: you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as
-    published by the Free Software Foundation, either version 3 of
-    the License, or (at your option) any later version.
-
-    This program 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 Lesser General Public License for more details.
-
-    You should have received a copy of the GNU Lesser General Public
-    License along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-*/
+/* SPDX-License-Identifier: LGPL-3.0-or-later */
+/* Copyright © 2022-2023 GSI Helmholtzzentrum fuer Schwerionenforschung GmbH
+ *                       Matthias Kretz <[email protected]>
+ */
 
 #ifndef VIR_SIMD_RESIZE_H
 #define VIR_SIMD_RESIZE_H

vir/simdize.h

@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: BSD-3-Clause */
+/* SPDX-License-Identifier: LGPL-3.0-or-later */
 /* Copyright © 2023 GSI Helmholtzzentrum fuer Schwerionenforschung GmbH
  *                  Matthias Kretz <[email protected]>
  */

vir/struct_reflect.h

@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: BSD-3-Clause */
+/* SPDX-License-Identifier: LGPL-3.0-or-later */
 /* Copyright © 2018-2023 GSI Helmholtzzentrum fuer Schwerionenforschung GmbH
  *                           Matthias Kretz <[email protected]>
  */

vir/test.cpp

@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: BSD-3-Clause */
+/* SPDX-License-Identifier: LGPL-3.0-or-later */
 /* Copyright © 2023 GSI Helmholtzzentrum fuer Schwerionenforschung GmbH
  *                  Matthias Kretz <[email protected]>
  */