Backport r35374 and r35375

* lib/rubygems:  Update to RubyGems 1.8.22 plus r33517 and r35337 which
  were ported to the rubygems git repository.

  See https://github.com/rubygems/rubygems/blob/1.8/History.txt for
  changes since 1.8.11.

* test/rubygems:  ditto.

* lib/rubygems/version.rb:  Fixed init_with warning by calling into
  yaml_initialize (for syck) from psych's init_with



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_3@35402 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

lib/rubygems/commands/build_command.rb

@@ -4,7 +4,11 @@ require 'rubygems/builder'
 class Gem::Commands::BuildCommand < Gem::Command
 
   def initialize
-    super('build', 'Build a gem from a gemspec')
+    super 'build', 'Build a gem from a gemspec'
+
+    add_option '--force', 'skip validation of the spec' do |value, options|
+      options[:force] = true
+    end
   end
 
   def arguments # :nodoc:
@@ -22,7 +26,7 @@ class Gem::Commands::BuildCommand < Gem::Command
       spec = load_gemspec gemspec
 
       if spec then
-        Gem::Builder.new(spec).build
+        Gem::Builder.new(spec).build options[:force]
       else
         alert_error "Error loading gemspec. Aborting."
         terminate_interaction 1

lib/rubygems/commands/fetch_command.rb

@@ -13,6 +13,7 @@ class Gem::Commands::FetchCommand < Gem::Command
     add_bulk_threshold_option
     add_proxy_option
     add_source_option
+    add_clear_sources_option
 
     add_version_option
     add_platform_option
@@ -58,8 +59,16 @@ class Gem::Commands::FetchCommand < Gem::Command
         next
       end
 
-      path = Gem::RemoteFetcher.fetcher.download spec, source_uri
-      FileUtils.mv path, File.basename(spec.cache_file)
+      file = "#{spec.full_name}.gem"
+      remote_path = URI.parse(source_uri) + "gems/#{file}"
+
+      fetch = Gem::RemoteFetcher.fetcher
+
+      gem = fetch.fetch_path remote_path.to_s
+
+      File.open file, "wb" do |f|
+        f.write gem
+      end
 
       say "Downloaded #{spec.full_name}"
     end

lib/rubygems/commands/pristine_command.rb

@@ -94,10 +94,14 @@ extensions.
       end
 
       # TODO use installer options
+      install_defaults = Gem::ConfigFile::PLATFORM_DEFAULTS['install']
+      installer_env_shebang = install_defaults.to_s['--env-shebang']
+      
       installer = Gem::Installer.new(gem,
                                      :wrappers => true,
                                      :force => true,
-                                     :install_dir => spec.base_dir)
+                                     :install_dir => spec.base_dir,
+                                     :env_shebang => installer_env_shebang)
       installer.install
 
       say "Restored #{spec.full_name}"

lib/rubygems/commands/setup_command.rb

@@ -252,9 +252,19 @@ TEXT
   end
 
   def make_destination_dirs(install_destdir)
-    lib_dir = nil
-    bin_dir = nil
+    lib_dir, bin_dir = Gem.default_rubygems_dirs
 
+    unless lib_dir
+      lib_dir, bin_dir = generate_default_dirs(install_destdir)
+    end
+
+    mkdir_p lib_dir
+    mkdir_p bin_dir
+
+    return lib_dir, bin_dir
+  end
+
+  def generate_default_dirs(install_destdir)
     prefix = options[:prefix]
     site_or_vendor = options[:site_or_vendor]
 
@@ -283,10 +293,7 @@ TEXT
       bin_dir = File.join install_destdir, bin_dir.gsub(/^[a-zA-Z]:/, '')
     end
 
-    mkdir_p lib_dir
-    mkdir_p bin_dir
-
-    return lib_dir, bin_dir
+    [lib_dir, bin_dir]
   end
 
   def remove_old_bin_files(bin_dir)

lib/rubygems/commands/specification_command.rb

@@ -62,7 +62,25 @@ FIELD         name of gemspec field to show
             "Please specify a gem name or file on the command line"
     end
 
-    dep = Gem::Dependency.new gem, options[:version]
+    case options[:version]
+    when String
+      req = Gem::Requirement.parse options[:version]
+    when Gem::Requirement
+      req = options[:version]
+    else
+      raise Gem::CommandLineError, "Unsupported version type: #{options[:version]}"
+    end
+
+    if !req.none? and options[:all]
+      alert_error "Specify --all or -v, not both"
+      terminate_interaction 1
+    end
+
+    if options[:all]
+      dep = Gem::Dependency.new gem
+    else
+      dep = Gem::Dependency.new gem, options[:version]
+    end
 
     field = get_one_optional_argument
 
@@ -80,7 +98,11 @@ FIELD         name of gemspec field to show
     end
 
     if remote? then
-      found = Gem::SpecFetcher.fetcher.fetch dep
+      found = Gem::SpecFetcher.fetcher.fetch dep, true
+
+      if dep.prerelease? or options[:prerelease]
+        found += Gem::SpecFetcher.fetcher.fetch dep, false, true, true
+      end
 
       specs.push(*found.map { |spec,| spec })
     end