Add support for //# sourceURL similar to deprecated //@ sourceURL one.

test/mjsunit/stack-traces.js

Index: test/mjsunit/stack-traces.js
diff --git a/test/mjsunit/stack-traces.js b/test/mjsunit/stack-traces.js
index b5d58fa0759f3086bce84d139824114d0b80d505..4a37ee6fa4f9ead6629c351af03cc72111a173b7 100644
--- a/test/mjsunit/stack-traces.js
+++ b/test/mjsunit/stack-traces.js
@@ -64,13 +64,13 @@ function testNestedEval() {
 }
 
 function testEvalWithSourceURL() {
-  eval("function Doo() { FAIL; }; Doo();\n//@ sourceURL=res://name");
+  eval("function Doo() { FAIL; }; Doo();\n//# sourceURL=res://name");
 }
 
 function testNestedEvalWithSourceURL() {
   var x = "FAIL";
   var innerEval = 'function Inner() { eval(x); }\n//@ sourceURL=res://inner-eval';
-  eval("function Outer() { eval(innerEval); Inner(); }; Outer();\n//@ sourceURL=res://outer-eval");
+  eval("function Outer() { eval(innerEval); Inner(); }; Outer();\n//# sourceURL=res://outer-eval");
 }
 
 function testValue() {