Move add_to_list from libunarchive to libbb so it can be of more general use (eg ifupdown). Changed the name to llist_add_to as i plan on adding more llist_ functions as needed (e.g. llist_free).

libbb/Makefile.in

@@ -33,7 +33,7 @@ LIBBB_SRC:= \
 	get_last_path_component.c get_line_from_file.c herror_msg.c \
 	herror_msg_and_die.c human_readable.c inet_common.c inode_hash.c \
 	interface.c isdirectory.c kernel_version.c last_char_is.c libc5.c \
-	loop.c make_directory.c mode_string.c \
+	llist_add_to.c loop.c make_directory.c mode_string.c \
 	module_syscalls.c mtab.c mtab_file.c my_getgrgid.c my_getgrnam.c \
 	my_getpwnam.c my_getpwnamegid.c my_getpwuid.c obscure.c parse_mode.c \
 	parse_number.c perror_msg.c perror_msg_and_die.c print_file.c \

libbb/llist_add_to.c

@@ -0,0 +1,15 @@
+#include <stdlib.h>
+#include <string.h>
+#include "unarchive.h"
+#include "libbb.h"
+
+extern llist_t *llist_add_to(llist_t *old_head, char *new_item)
+{
+	llist_t *new_head;
+
+	new_head = xmalloc(sizeof(llist_t));
+	new_head->data = new_item;
+	new_head->link = old_head;
+
+	return(new_head);
+}