Add forgotten bin/gem for RubyGems.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@13874 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,7 @@
+Sun Nov 11 05:34:13 2007  Eric Hodel  <drbrain@segment7.net>
+
+	* bin/gem: Add forgotten gem command.
+
 Sat Nov 10 23:50:31 2007  Tanaka Akira  <akr@fsij.org>
 
 	* string.c (tr_trans): cast to unsigned char after dereference

bin/gem

@@ -0,0 +1,23 @@
+#!/usr/bin/env ruby
+#--
+# Copyright 2006 by Chad Fowler, Rich Kilmer, Jim Weirich and others.
+# All rights reserved.
+# See LICENSE.txt for permissions.
+#++
+
+require 'rubygems'
+require 'rubygems/gem_runner'
+
+required_version = Gem::Requirement.new ">= 1.8.2"
+
+unless required_version.satisfied_by? Gem::Version.new(RUBY_VERSION) then
+  abort "Expected Ruby Version #{required_version}, was #{RUBY_VERSION}"
+end
+
+# We need to preserve the original ARGV to use for passing gem options
+# to source gems.  If there is a -- in the line, strip all options after
+# it...its for the source building process.
+args = !ARGV.include?("--") ? ARGV.clone : ARGV[0...ARGV.index("--")]
+
+Gem::GemRunner.new.run args
+