Use Mix.Rebar as module for project pushing

Author: ericmj

lib/mix/lib/mix/deps.ex

@@ -110,7 +110,7 @@ defmodule Mix.Deps do
   def in_dependency(Mix.Dep[opts: opts], post_config, fun) do
     # Use post_config for rebar deps
     Mix.Project.post_config(post_config)
-    Mix.Project.push(Mix.Rebar.Mixproject)
+    Mix.Project.push(Mix.Rebar)
     try do
       File.cd!(opts[:dest], fn -> fun.(nil) end)
     after

lib/mix/lib/mix/rebar.ex

@@ -1,6 +1,9 @@
 defmodule Mix.Rebar do
   @moduledoc false
 
+  @doc false
+  def project, do: []
+
   @doc """
   Loads the rebar.config and evaluates rebar.config.script if it exists in the
   given directory.
@@ -114,11 +117,3 @@ defmodule Mix.Rebar do
     end)
   end
 end
-
-# Used when pushing a rebar dependency to the project stack
-defmodule Mix.Rebar.Mixproject do
-  @moduledoc false
-
-  @doc false
-  def project, do: []
-end