Use Location rather than location header.

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@5635 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

actionpack/lib/action_controller/base.rb

@@ -891,7 +891,7 @@ module ActionController #:nodoc:
         response.redirected_to = nil
         response.redirected_to_method_params = nil
         response.headers['Status'] = DEFAULT_RENDER_STATUS_CODE
-        response.headers.delete('location')
+        response.headers.delete('Location')
       end
 
       # Erase both render and redirect results

actionpack/lib/action_controller/integration.rb

@@ -113,7 +113,7 @@ module ActionController
       # performed on the location header.
       def follow_redirect!
         raise "not a redirect! #{@status} #{@status_message}" unless redirect?
-        get(interpret_uri(headers["location"].first))
+        get(interpret_uri(headers['Location'].first))
         status
       end
 

actionpack/lib/action_controller/test_process.rb

@@ -179,7 +179,7 @@ module ActionController #:nodoc:
 
     # returns the redirection location or nil
     def redirect_url
-      redirect? ? headers['location'] : nil
+      redirect? ? headers['Location'] : nil
     end
 
     # does the redirect location match this regexp pattern?