Do not print app name as a filename

Author: José Valim

lib/mix/lib/mix/tasks/compile.app.ex

@@ -104,7 +104,7 @@ defmodule Mix.Tasks.Compile.App do
       if mods == [], do: Mix.Project.build_structure(config)
       File.write!(target, :io_lib.format("~p.", [contents]))
 
-      Mix.shell.info "Generated #{app}.app"
+      Mix.shell.info "Generated #{app} app"
       :ok
     else
       :noop

lib/mix/test/mix/tasks/compile_test.exs

@@ -40,7 +40,7 @@ defmodule Mix.Tasks.CompileTest do
       assert File.regular?("_build/dev/lib/sample/ebin/Elixir.A.beam")
       assert File.regular?("_build/dev/lib/sample/ebin/sample.app")
       assert_received {:mix_shell, :info, ["Compiled lib/a.ex"]}
-      assert_received {:mix_shell, :info, ["Generated sample.app"]}
+      assert_received {:mix_shell, :info, ["Generated sample app"]}
     end
   end
 

lib/mix/test/mix/umbrella_test.exs

@@ -17,10 +17,10 @@ defmodule Mix.UmbrellaTest do
 
         assert_received {:mix_shell, :info, ["==> bar"]}
         assert_received {:mix_shell, :info, ["Compiled lib/bar.ex"]}
-        assert_received {:mix_shell, :info, ["Generated bar.app"]}
+        assert_received {:mix_shell, :info, ["Generated bar app"]}
         assert_received {:mix_shell, :info, ["==> foo"]}
         assert_received {:mix_shell, :info, ["Compiled lib/foo.ex"]}
-        assert_received {:mix_shell, :info, ["Generated foo.app"]}
+        assert_received {:mix_shell, :info, ["Generated foo app"]}
 
         # Ensure foo was loaded and in the same env as Mix.env
         assert_received {:mix_shell, :info, [":foo env is dev"]}