Bug 900913 - update talos to latest bits to capture xperf fix and other cleanup. r=edmorley

testing/talos/talos.json

@@ -5,7 +5,7 @@
     },
     "global": {
         "talos_repo": "http://hg.mozilla.org/build/talos",
-        "talos_revision": "09e235f45c9b"
+        "talos_revision": "4063ef2a221e"
     },
     "suites": {
         "chromez": {