added fs testcase (works well for me)

test/test_fs.sh

@@ -0,0 +1,19 @@
+#!/bin/sh
+# Heavy access test of wmiiwm's fs
+
+dump_fs() {
+	echo $1
+	wmiir read $1|wmiir write $1;
+	for i in `wmiir read $1|awk '{print $10}'`
+	do
+		if test $i != "event"
+		then
+			dump_fs $1/$i
+		fi
+	done
+}
+
+while true
+do
+	dump_fs /
+done