Upgrade to 5.0.71.48

Change-Id: I1d03e89e30c95997ef140af4d49a642a9a4ccd59
diff --git a/test/mjsunit/debug-script.js b/test/mjsunit/debug-script.js
index 8874960..5396415 100644
--- a/test/mjsunit/debug-script.js
+++ b/test/mjsunit/debug-script.js
@@ -73,8 +73,8 @@
 
 // This has to be updated if the number of native scripts change.
 assertEquals(%NativeScriptsCount(), named_native_count);
-// Only the 'gc' extension is loaded.
-assertEquals(1, extension_count);
+// The 'gc' extension and one or two extras scripts are loaded.
+assertTrue(extension_count == 2 || extension_count == 3);
 // This script and mjsunit.js has been loaded.  If using d8, d8 loads
 // a normal script during startup too.
 assertTrue(normal_count == 2 || normal_count == 3);