Changing command line API from 'rails blog' to 'rails new blog'.

Also removed the limitation of not being able to call your new server any of
the rails commands (generate, server, dbconsole, console etc) as there is
no longer any ambiguity here.

http://rails.lighthouseapp.com/projects/8994/tickets/4665

railties/lib/rails/commands.rb

@@ -38,6 +38,10 @@
 when 'application', 'runner'
   require "rails/commands/#{command}"
 
+when 'new'
+  puts "Can't initialize a new Rails application within the directory of another, please change to a non-Rails directory first.\n"
+  puts "Type 'rails' for help."
+
 when '--version', '-v'
   ARGV.unshift '--version'
   require 'rails/commands/application'
@@ -53,6 +57,8 @@
  server      Start the Rails server (short-cut alias: "s")
  dbconsole   Start a console for the database specified in config/database.yml
              (short-cut alias: "db")
+ new         Create a new Rails application. "rails new my_app" creates a
+             new application called MyApp in "./my_app"
 
 In addition to those, there are:
  application  Generate the Rails application code

railties/lib/rails/commands/application.rb

@@ -4,7 +4,12 @@
   exit(0)
 end
 
-ARGV << "--help"   if ARGV.empty?
+if ARGV.first != "new" || ARGV.empty?
+  ARGV[0] = "--help"
+else
+  ARGV.shift
+end
+
 require 'rubygems' if ARGV.include?("--dev")
 
 require 'rails/generators'

railties/lib/rails/generators/rails/app/USAGE

@@ -1,9 +1,9 @@
 Description:
-    The 'rails' command creates a new Rails application with a default
+    The 'rails new' command creates a new Rails application with a default
     directory structure and configuration at the path you specify.
 
 Example:
-    rails ~/Code/Ruby/weblog
+    rails new ~/Code/Ruby/weblog
 
     This generates a skeletal Rails installation in ~/Code/Ruby/weblog.
     See the README in the newly created application to get going.

railties/lib/rails/generators/rails/app/app_generator.rb

@@ -149,8 +149,7 @@ module Generators
     # can change in Ruby 1.8.7 when we FileUtils.cd.
     RAILS_DEV_PATH = File.expand_path("../../../../../..", File.dirname(__FILE__))
 
-    RESERVED_NAMES = %w[generate g console c server s dbconsole db
-                        application destroy benchmarker profiler
+    RESERVED_NAMES = %w[application destroy benchmarker profiler
                         plugin runner test]
 
     class AppGenerator < Base