Add a simple script that calculates an aggregate score over all tests running with the jit in t/*.

js/src/bench.sh

@@ -0,0 +1,9 @@
+#!/bin/bash
+T="0"
+for i in t/*.js; do 
+	T+="+"
+	T+=`Darwin_OPT.OBJ/js -j -e 'var d = Date.now(); load("'$i'"); print(Date.now() - d);'`
+	 
+done
+echo $T | bc
+