head,tail: use common suffix struct. simplify help text.

function                                             old     new   delta
head_tail_suffixes                                     -      32     +32
head_main                                            415     406      -9
packed_usage                                       29252   29234     -18
tail_suffixes                                         32       -     -32
head_suffixes                                         32       -     -32
------------------------------------------------------------------------------
(add/remove: 2/2 grow/shrink: 0/2 up/down: 32/-91)            Total: -59 bytes
   text    data     bss     dec     hex filename
 890474     497    7584  898555   db5fb busybox_old
 890415     497    7584  898496   db5c0 busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 14 insertions, 0 deletions

diff --git a/coreutils/head_tail.c b/coreutils/head_tail.c
new file mode 100644
index 0000000..1658c0d
--- /dev/null
+++ b/coreutils/head_tail.c
@@ -0,0 +1,14 @@
+/*
+ * Copyright (C) 2013 Denys Vlasenko
+ *
+ * Licensed under GPLv2, see file LICENSE in this source tree.
+ */
+#include "libbb.h"
+#include "head_tail.h"
+
+const struct suffix_mult head_tail_suffixes[] = {
+	{ "b", 512 },
+	{ "k", 1024 },
+	{ "m", 1024*1024 },
+	{ "", 0 }
+};