make this work if $path doesn't have . (dot):

	cd /sys/man
	mk lookindex

Notes:
Thu Jan 21 18:55:22 EST 2010 geoff
    path should always contain dot, possibly at the rightmost end,
    on plan 9.  conventions matter on plan 9.


Reference: /n/sources/patch/sorry/mkindex-path
Date: Sat Jun 21 22:38:35 CES 2008
Signed-off-by: fshahriar@gmail.com
Reviewed-by: geoff

--- /sys/man/mkfile	Sat Jun 21 22:35:01 2008
+++ /sys/man/mkfile	Sat Jun 21 22:35:00 2008
@@ -65,7 +65,7 @@
 
 lookindex:V:
 	builtin cd $LIB/lookman
-	mkindex
+	./mkindex
 
 
 print.out:V: permind