Update menuconfig items with approximate applet sizes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/coreutils/cat.c b/coreutils/cat.c
index a9ba68d..41bef8f 100644
--- a/coreutils/cat.c
+++ b/coreutils/cat.c
@@ -7,7 +7,7 @@
  * Licensed under GPLv2, see file LICENSE in this source tree.
  */
 //config:config CAT
-//config:	bool "cat"
+//config:	bool "cat (5.6 kb)"
 //config:	default y
 //config:	help
 //config:	  cat is used to concatenate files and print them to the standard