build system: disable some applets by default

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/Config.in b/Config.in
index fc02a2d..eebc977 100644
--- a/Config.in
+++ b/Config.in
@@ -138,6 +138,7 @@
 	help
 	  With this option on, Unicode support is implemented using libc
 	  routines. Otherwise, internal implementation is used.
+	  Internal implementation is smaller.
 
 config FEATURE_CHECK_UNICODE_IN_ENV
 	bool "Check $LANG environment variable"