Convert all coreutils/* applets to "new style" applet definitions

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

coreutils/chgrp.c

@@ -6,6 +6,15 @@
  *
  * Licensed under GPLv2 or later, see file LICENSE in this source tree.
  */
+//config:config CHGRP
+//config:	bool "chgrp"
+//config:	default y
+//config:	help
+//config:	  chgrp is used to change the group ownership of files.
+
+//applet:IF_CHGRP(APPLET_NOEXEC(chgrp, chgrp, BB_DIR_BIN, BB_SUID_DROP, chgrp))
+
+//kbuild:lib-$(CONFIG_CHGRP) += chgrp.o chown.o
 
 /* BB_AUDIT SUSv3 defects - none? */
 /* BB_AUDIT GNU defects - unsupported long options. */