various: add descriptions, attribution, license

abuild-sudo.c

+/* abuild-sudo.c - limited root privileges for users in "abuild" group
+ *
+ * Copyright (C) 2012 Natanael Copa <ncopa@alpinelinux.org>
+ * All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation. See http://www.gnu.org/ for details.
+ */
 
 #include <sys/types.h>
 

abump.in

 #!/bin/sh
 
+# abump - bump pkgver in APKBUILDs
+# Copyright (c) 2012 Natanael Copa <ncopa@alpinelinux.org>
+#
+# Distributed under GPL-2
+#
+
 program=${0##*/}
 
 die() {

apkgrel.in

 #!/bin/sh
 
+# apkgrel - display or bump pkgrel in APKBUILDs
+# Copyright (c) 2012 Natanael Copa <ncopa@alpinelinux.org>
+#
+# Distributed under GPL-2
+#
+
 program=${0##*/}
 
 do_show() {

checkapk.in

 #!/bin/sh
 
+# checkapk - find ABI breakages in package upgrades
+# Copyright (c) 2012 Natanael Copa <natanael.copa@gmail.com>
+#
+# Distributed under GPL-2
+#
+
 die() {
 	echo "$@" >&2
 	exit 1