- move buffer allocation schemes to libbb.h

- include the correct headers: applets need busybox.h while lib* need libbb.h

libbb/compare_string_array.c

@@ -1,20 +1,10 @@
+/* vi:set ts=4:*/
 /*
- *  This program is free software; you can redistribute it and/or modify
- *  it under the terms of the GNU General Public License as published by
- *  the Free Software Foundation; either version 2 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 General Public License for more details.
- *
- *  You should have received a copy of the GNU General Public License
- *  along with this program; if not, write to the Free Software
- *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
  */
 
 #include <string.h>
+#include "libbb.h"
 
 /* returns the array number of the string */
 int compare_string_array(const char * const string_array[], const char *key)