Expanded :method option in FormTagHelper#form_tag, FormHelper#form_for, PrototypeHelper#remote_form_for, PrototypeHelper#remote_form_tag, and PrototypeHelper#link_to_remote to allow for verbs other than GET and POST by automatically creating a hidden form field named _method, which will simulate the other verbs over post [DHH]

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@4375 5ecf4fe2-1ee6-0310-87b1-e25e094e27de