Fix hand-made autoloading to allow directly referencing MozillaStore.

lib/http/cookie_jar.rb

@@ -9,6 +9,27 @@ class HTTP::CookieJar
   require 'http/cookie_jar/abstract_store'
   require 'http/cookie_jar/abstract_saver'
 
+  class << self
+    def const_missing(name)
+      case name.to_s
+      when /\A([A-Za-z]+)Store\z/
+        file = 'http/cookie_jar/%s_store' % $1.downcase
+      when /\A([A-Za-z]+)Saver\z/
+        file = 'http/cookie_jar/%s_saver' % $1.downcase
+      end
+      begin
+        require file
+      rescue LoadError => e
+        raise NameError, 'can\'t resolve constant %s; failed to load %s' % [name, file]
+      end
+      if const_defined?(name)
+        const_get(name)
+      else
+        raise NameError, 'can\'t resolve constant %s after loading %s' % [name, file]
+      end
+    end
+  end
+
   attr_reader :store
 
   # Generates a new cookie jar.

lib/http/cookie_jar/mozilla_store.rb

@@ -94,7 +94,7 @@ class HTTP::CookieJar
 
       @filename = options[:filename] or raise ArgumentError, ':filename option is missing'
 
-      @sjar = HashStore.new
+      @sjar = HTTP::CookieJar::HashStore.new
 
       @db = Database.new(@filename)