simulate old 0a command with va -L

Reference: /n/sources/patch/applied/0a
Date: Sat Mar 25 08:08:47 CET 2006
Signed-off-by: geoff@collyer.net

--- /rc/bin/0a	Thu Jan  1 00:00:00 1970
+++ /rc/bin/0a	Sat Mar 25 08:32:38 2006
@@ -0,0 +1,2 @@
+#!/bin/rc
+exec va -L $*