Explicit options should have precedence over railsrc on the rails new

command

Closes #8545

railties/CHANGELOG.md

@@ -1,5 +1,9 @@
 ## Rails 4.0.0 (unreleased) ##
 
+*   Explicit options have precedence over `~/.railsrc` on the `rails new` command.
+
+    *Rafael Mendonça França*
+
 *   Generated migrations now always use the `change` method.
 
     *Marc-André Lafortune*

railties/lib/rails/commands/application.rb

@@ -14,8 +14,7 @@ else
     extra_args_string = File.open(railsrc).read
     extra_args = extra_args_string.split(/\n+/).map {|l| l.split}.flatten
     puts "Using #{extra_args.join(" ")} from #{railsrc}"
-    ARGV << extra_args
-    ARGV.flatten!
+    ARGV.insert(1, *extra_args)
   end
 end