add sh for awk

Reference: /n/atom/patch/applied/archminsh
Date: Fri Apr  4 03:38:45 CES 2014
Signed-off-by: quanstro@quanstro.net

--- /sys/lib/dist/amd64/proto/archmin	Fri Apr  4 03:38:45 2014
+++ /sys/lib/dist/amd64/proto/archmin	Fri Apr  4 03:38:45 2014
@@ -6,6 +6,7 @@
 $arch	d775	sys	sys
 	bin	d775	sys	sys
 		ape	d775	sys	sys
+			sh	sys	sys
 		auth	d775	sys	sys
 		aux	d775	sys	sys
 			getflags	775	sys	sys