Fixup deps files and VERSION file on 1.5 branch

deps/all.deps/DEPS

 # Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.
 
 vars = {
   # Use this googlecode_url variable only if there is an internal mirror for it.
   # If you do not know, use the full path while defining your new deps entry.
   "googlecode_url": "http://%s.googlecode.com/svn",
 
   "gyp_rev": "@1752",
@@ skipping 28 matching lines @@
   "snakeyaml_rev" : "@19997",
   "websocket_rev" : "@35854",
   "WebCore_rev" : "@34173",
   "weberknecht_rev" : "@33599",
   "font_awesome_rev": "@31824",
   "barback-0.13.0_rev": "@34853",
 }
 
 deps = {
   "dart":
-    "/trunk/dart",
+    "/branches/1.5/dart",
 
   # Stuff needed for GYP to run.
   "dart/third_party/gyp":
       (Var("googlecode_url") % "gyp") + "/trunk" + Var("gyp_rev"),
 
   "dart/tests/co19/src": ((Var("googlecode_url") % "co19") +
       "/trunk/co19/tests/co19/src" + Var("co19_rev")),
 
   "dart/third_party/nss":
       Var("chromium_url") + "/trunk/deps/third_party/nss" + Var("nss_rev"),
@@ skipping 77 matching lines @@
   },
   {
     "pattern": ".",
     "action": ["python", "dart/editor/build/generate_sources.py"],
   },
   {
     "pattern": ".",
     "action": ["python", "dart/tools/gyp_dart.py"],
   },
 ]