Introduce "route del" as an alias to "route delete".

Reviewed by:	arch

sbin/route/keywords

@@ -6,6 +6,7 @@ atalk
 blackhole
 change
 cloning
+del
 delete
 dst
 expire

sbin/route/route.8

@@ -83,7 +83,7 @@ commands.
 .Pp
 The
 .Nm
-utility provides six commands:
+utility provides the following commands:
 .Pp
 .Bl -tag -width Fl -compact
 .It Cm add
@@ -92,6 +92,10 @@ Add a route.
 Remove all routes.
 .It Cm delete
 Delete a specific route.
+.It Cm del
+Another name for the
+.Cm delete
+command.
 .It Cm change
 Change aspects of a route (such as its gateway).
 .It Cm get

sbin/route/route.c

@@ -174,6 +174,7 @@ main(argc, argv)
 
 		case K_CHANGE:
 		case K_ADD:
+		case K_DEL:
 		case K_DELETE:
 			newroute(argc, argv);
 			/* NOTREACHED */