moved rails binary to rails gem, so rubygems can find specific versions of rails [#4382 state:resolved]

Signed-off-by: wycats <wycats@gmail.com>

bin/rails

@@ -0,0 +1 @@
+require 'rails/cli'

rails.gemspec

@@ -15,8 +15,9 @@ Gem::Specification.new do |s|
   s.homepage          = 'http://www.rubyonrails.org'
   s.rubyforge_project = 'rails'
 
-  s.files = []
-  s.require_path = []
+  s.bindir             = 'bin'
+  s.executables        = ['rails']
+  s.default_executable = 'rails'
 
   s.add_dependency('activesupport',  version)
   s.add_dependency('actionpack',     version)

railties/railties.gemspec

@@ -15,9 +15,6 @@ Gem::Specification.new do |s|
 
   s.files              = Dir['CHANGELOG', 'README', 'bin/**/*', 'guides/**/*', 'lib/**/{*,.[a-z]*}']
   s.require_path       = 'lib'
-  s.bindir             = 'bin'
-  s.executables        = ['rails']
-  s.default_executable = 'rails'
 
   s.rdoc_options << '--exclude' << '.'
   s.has_rdoc = false

railties/test/isolation/abstract_unit.rb

@@ -213,7 +213,7 @@ Module.new do
     require_environment = "-r #{environment}"
   end
 
-  `#{Gem.ruby} #{require_environment} #{RAILS_FRAMEWORK_ROOT}/railties/bin/rails #{tmp_path('app_template')}`
+  `#{Gem.ruby} #{require_environment} #{RAILS_FRAMEWORK_ROOT}/bin/rails #{tmp_path('app_template')}`
   File.open("#{tmp_path}/app_template/config/boot.rb", 'w') do |f|
     if require_environment
       f.puts "Dir.chdir('#{File.dirname(environment)}') do"