Upgrade to Rails 2.0.2

Upgraded to Rails 2.0.2, except that we maintain

   vendor/rails/actionpack/lib/action_controller/routing.rb

from Rail 1.2.6 (at least for now), so that Routes don't change. We still
get to enjoy Rails's many new features.

Also fixed a bug in Chunk-handling: disable WikiWord processing in tags (for real this time).

vendor/rails/railties/lib/source_annotation_extractor.rb

@@ -0,0 +1,62 @@
+class SourceAnnotationExtractor
+  class Annotation < Struct.new(:line, :tag, :text)
+    def to_s(options={})
+      s = "[%3d] " % line
+      s << "[#{tag}] " if options[:tag]
+      s << text
+    end
+  end
+
+  def self.enumerate(tag, options={})
+    extractor = new(tag)
+    extractor.display(extractor.find, options)
+  end
+
+  attr_reader :tag
+
+  def initialize(tag)
+    @tag = tag
+  end
+
+  def find(dirs=%w(app lib test))
+    dirs.inject({}) { |h, dir| h.update(find_in(dir)) }
+  end
+
+  def find_in(dir)
+    results = {}
+
+    Dir.glob("#{dir}/*") do |item|
+      next if File.basename(item)[0] == ?.
+
+      if File.directory?(item)
+        results.update(find_in(item))
+      elsif item =~ /\.(builder|(r(?:b|xml|js)))$/
+        results.update(extract_annotations_from(item, /#\s*(#{tag}):?\s*(.*)$/))
+      elsif item =~ /\.(rhtml|erb)$/
+        results.update(extract_annotations_from(item, /<%\s*#\s*(#{tag}):?\s*(.*?)\s*%>/))
+      end
+    end
+
+    results
+  end
+
+  def extract_annotations_from(file, pattern)
+    lineno = 0
+    result = File.readlines(file).inject([]) do |list, line|
+      lineno += 1
+      next list unless line =~ pattern
+      list << Annotation.new(lineno, $1, $2)
+    end
+    result.empty? ? {} : { file => result }
+  end
+
+  def display(results, options={})
+    results.keys.sort.each do |file|
+      puts "#{file}:"
+      results[file].each do |note|
+        puts "  * #{note.to_s(options)}"
+      end
+      puts
+    end
+  end
+end