Patch for uploaded file url

Hello :)

I'm using this module since last month. But this module have a big problem. that is a url problem on editing form.
When editing a node, uplaod form printed original url. (eg. http://example.com/default/files/xxx.ext). After submitted, it changed to url changed by uploadpath module.

So i can't using url on editing form. And after once submitted, i editing a unpublished post and publish post. It's so inconvenient for me.

So, i added a replacement feature. it replace urls to valid url automatically. When you editing a node, you can insert original url to body and submitted. Then, the original url is replaced into valid url.
(eg. http://example.com/default/files/xxx.ext -> http://example.com/default/blog/2010/xxx.ext)

Only newly uploaded file's url has converted.