Rearrange build configurations - make it clearer and allow better support for...

DEPS

 vars = {
   "webkit_trunk":
     "http://svn.webkit.org/repository/webkit/trunk",
   "webkit_revision": "52459",
   "ffmpeg_revision": "34297",
   "skia_revision": "457",
   "chromium_git": "http://src.chromium.org/git",
 }
 
 deps = {
@@ skipping 24 matching lines @@
   "src/third_party/protobuf2/src":
     "http://protobuf.googlecode.com/svn/trunk@219",
 
   "src/tools/gyp":
     "http://gyp.googlecode.com/svn/trunk@767",
 
   "src/v8":
     "http://v8.googlecode.com/svn/trunk@3510",
 
   "src/native_client":
-    "http://nativeclient.googlecode.com/svn/trunk/src/native_client@1067",
+    "http://nativeclient.googlecode.com/svn/trunk/src/native_client@1175",
 
   "src/third_party/skia/src":
     "http://skia.googlecode.com/svn/trunk/src@" + Var("skia_revision"),
 
   "src/third_party/skia/include":
     "http://skia.googlecode.com/svn/trunk/include@" + Var("skia_revision"),
 
   "src/third_party/WebKit/LayoutTests":
     Var("webkit_trunk") + "/LayoutTests@" + Var("webkit_revision"),
 
@@ skipping 176 matching lines @@
                "$matching_files"],
   },
   {
     # Workaround XCode dependecies problem.
     # TODO(bradnelson): remove this when fixed.
     "pattern": ".",
     "action": ["python",
                "src/build/mac/clobber_generated_headers.py"],
   },
 ]