Updated boot.rb so it plays nice with 1.9.

Author: radar

config/boot.rb

@@ -44,6 +44,7 @@ class VendorBoot < Boot
     def load_initializer
       require "#{RAILS_ROOT}/vendor/rails/railties/lib/initializer"
       Rails::Initializer.run(:install_gem_spec_stubs)
+      Rails::GemDependency.add_frozen_gem_path
     end
   end
 
@@ -67,7 +68,7 @@ def load_rails_gem
 
     class << self
       def rubygems_version
-        Gem::RubyGemsVersion if defined? Gem::RubyGemsVersion
+        Gem::RubyGemsVersion rescue nil
       end
 
       def gem_version
@@ -82,7 +83,7 @@ def gem_version
 
       def load_rubygems
         require 'rubygems'
-        min_version = '1.1.1'
+        min_version = '1.3.1'
         unless rubygems_version >= min_version
           $stderr.puts %Q(Rails requires RubyGems >= #{min_version} (you have #{rubygems_version}). Please `gem update --system` and try again.)
           exit 1