Update scummvm to 1.6.0, also make it a packaged app.

examples/games/scummvm/packaged_app/manifest.json

Index: examples/games/scummvm/packaged_app/manifest.json
diff --git a/examples/games/scummvm/hosted_app/manifest.json b/examples/games/scummvm/packaged_app/manifest.json
similarity index 62%
rename from examples/games/scummvm/hosted_app/manifest.json
rename to examples/games/scummvm/packaged_app/manifest.json
index f7aa63f8ca14bd12e111be9aa57f952d3154e54c..00c1f63761e2737b602bc4a6ee6d46b241518cc9 100644
--- a/examples/games/scummvm/hosted_app/manifest.json
+++ b/examples/games/scummvm/packaged_app/manifest.json
@@ -3,15 +3,15 @@
   "description": "Play Beneath a Steel Sky and Lure of the Temptress",
   "version": "0.0.0.2",
   "app": {
-    "urls": [
-      "http://nacl-scumm.appspot.com/"
-    ],
-    "launch": {
-      "web_url": "http://nacl-scumm.appspot.com"
+    "background": {
+      "scripts": ["background.js"]
     }
   },
   "icons": {
     "128": "scummvm_128.png",
     "16": "scummvm_16.png"
-  }
+  },
+  "permissions": [
+    "unlimitedStorage"
+  ]
 }