minor changes to license headers and to compilation

Makefile

@@ -1,4 +1,4 @@
-# Copyright (c) 2023 YAC
+# Copyright (c) 2023 Emma Tebibyte
 # SPDX-License-Identifier: FSFAP
 #
 # Copying and distribution of this file, with or without modification, are
@@ -8,6 +8,7 @@
 .POSIX:
 
 PREFIX=/usr/local/bin
+CFLAGS=-O3 -s -Wl,-z,noseparate-code,-z,nosectionheader -flto
 
 build: build_dir cat false true
 
@@ -15,13 +16,13 @@ clean: build_dir
 	rm -rf build/
 
 cat: build_dir
-	cc -o build/cat src/cat.c
+	cc $(CFLAGS) -o build/cat src/cat.c
 
 false: build_dir
-	cc -o build/false src/false.c
+	cc $(CFLAGS) -o build/false src/false.c
 
 true: build_dir
-	cc -o build/true src/true.c
+	cc $(CFLAGS) -o build/true src/true.c
 
 build_dir:
 	mkdir -p build

src/cat.c

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2023 YAC
+ * Copyright (c) 2023 Emma Tebibyte
  * SPDX-License-Identifier: AGPL-3.0-or-later
  *
  * This file is part of YAC coreutils.

src/false.c

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2023 YAC
+ * Copyright (c) 2023 Emma Tebibyte
  * SPDX-License-Identifier: AGPL-3.0-or-later
  *
  * This file is part of YAC coreutils.

src/true.c

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2023 YAC
+ * Copyright (c) 2023 Emma Tebibyte
  * SPDX-License-Identifier: AGPL-3.0-or-later
  *
  * This file is part of YAC coreutils.