Added interpreter name.

git-svn-id: svn://svn.valgrind.org/valgrind/trunk@7939 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/vg-in-place b/vg-in-place
index c13ed93..86df128 100755
--- a/vg-in-place
+++ b/vg-in-place
@@ -1,3 +1,5 @@
+#!/bin/sh
+
 # This ensures it works when invoked from any directory.
 d=`dirname $0`