Convert all util-linux/* applets to "new style" applet definitions

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

util-linux/rdate.c

@@ -6,7 +6,19 @@
  * by Sterling Huxley <sterling@europa.com>
  *
  * Licensed under GPLv2 or later, see file LICENSE in this source tree.
-*/
+ */
+//config:config RDATE
+//config:	bool "rdate"
+//config:	default y
+//config:	help
+//config:	  The rdate utility allows you to synchronize the date and time of your
+//config:	  system clock with the date and time of a remote networked system using
+//config:	  the RFC868 protocol, which is built into the inetd daemon on most
+//config:	  systems.
+
+//applet:IF_RDATE(APPLET(rdate, BB_DIR_USR_SBIN, BB_SUID_DROP))
+
+//kbuild:lib-$(CONFIG_RDATE) += rdate.o
 
 //usage:#define rdate_trivial_usage
 //usage:       "[-sp] HOST"