Update RubyGems to 1.1.1 r1778 (almost 1.2)

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@17392 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

lib/rubygems/install_update_options.rb

@@ -89,6 +89,12 @@ module Gem::InstallUpdateOptions
                'foo_exec18') do |value, options|
       options[:format_executable] = value
     end
+
+    add_option(:"Install/Update", "--development",
+                "Install any additional development",
+                "dependencies") do |value, options|
+      options[:development] = true
+    end
   end
 
   # Default options for the gem install command.