intcmp(1): new tool; npc(1): new tool; scrut(1): new tool; str(1): new tool; strcmp(1): new tool; tests: added POSIX compatibility test and C compiler compatibility test; Makefile: converted to GNUmakefile; README: added README; docs: added docs

src/true.c

@@ -1,21 +1,9 @@
 /*
  * Copyright (c) 2023 Emma Tebibyte <emma@tebibyte.media>
- * SPDX-License-Identifier: AGPL-3.0-or-later
+ * SPDX-License-Identifier: CC0
  *
- * This file is part of YAC coreutils.
- *
- * YAC coreutils is free software: you can redistribute it and/or modify it
- * under the terms of the GNU Affero General Public License as published by the
- * Free Software Foundation, either version 3 of the License, or (at your
- * option) any later version.
- * 
- * YAC coreutils 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 Affero General Public License for more
- * details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see https://www.gnu.org/licenses/.
+ * This work is marked with CC0 1.0. To view a copy of this license, visit
+ * <http://creativecommons.org/publicdomain/zero/1.0>.
  */
 
 int main() {}