label_tag for form_tag_helper

I noticed there was no label_tag present yet in form_tag_helper, and with label() you need an object and a method. So i've submitted this patch which adds label_tag, and I tried to mimick label-like behaviour.

And now I'm in search of some +1's

Regards,
Jan De Poorter

And I forgot the URL!

http://dev.rubyonrails.org/ticket/10802

Regards