As a side benefit, fix an (non-user-visible) bug in display_s5(). Also fixed a bug where removing orphaned pages did not expire cached summary pages.
Updated Instiki to Rails 2.1 RC1 (aka 2.0.991).
Get rid of Redefined CONSTANT warning. Make WEBrick respond to TERM signal. (Launchd, in particular, requires this.) Rollback superfluous change to rails/actionpack/lib/action_controller/base.rb. Handled by the action_cache plugin.
Sync with latest Instiki Trunk (Updates Rails to 1.2.2)