Added MemCacheStore to fragment caching #449 [Lucas Carlson]

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@385 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

actionpack/lib/action_controller/caching.rb

@@ -243,6 +243,12 @@ def initialize(address = 'druby://localhost:9192')
         end    
       end
 
+      class MemCacheStore < MemoryStore
+        def initialize(address = 'localhost')
+          @data = MemCache.new(address)
+        end    
+      end
+
       class FileStore
         def initialize(cache_path)
           @cache_path = cache_path