New extension: memoize

Hi, This extension provides transparent caching of functions by their arguments, much like Perl's memoize module. It works by replacing the function entry with an internal function which hashes: the function name, arguments, the object if there is one, and an optional namespace from an ini setting. It provides three storage modules: "memory" which uses a per-request hashtable, "apc" and "memcached". I gather that at the moment there's no support for one package providing multiple extensions, so this would need to go into four different packages. The code can be found at: https://github.com/arraypad/php-memoize I'd like to publish this extension in PECL if it looks alright to everyone, and I'd appreciate any feedback. Regards, Arpad