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

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

miscutils/mountpoint.c

@@ -14,6 +14,10 @@
 //config:	help
 //config:	  mountpoint checks if the directory is a mountpoint.
 
+//applet:IF_MOUNTPOINT(APPLET(mountpoint, BB_DIR_BIN, BB_SUID_DROP))
+
+//kbuild:lib-$(CONFIG_MOUNTPOINT) += mountpoint.o
+
 //usage:#define mountpoint_trivial_usage
 //usage:       "[-q] <[-dn] DIR | -x DEVICE>"
 //usage:#define mountpoint_full_usage "\n\n"