Added a :normalize_asset_timestamps property.

This is queried in finalize_update to determine whether or not to
touch all of the assets.  Subversion has a configuration option
(use-commit-timestamps), which renders this process unnecessary if
set.

CHANGELOG

@@ -1,3 +1,8 @@
+*unreleased*
+
+* Added :normalize_asset_timestamps option to deployment, defaulting to true, which allows asset timestamping to be disabled [John Trupiano]
+
+
 *2.4.0 Preview Release #1* (2.3.101) June 5, 2008 
 
 * Only make deploy:start, deploy:stop, and deploy:restart try sudo as :runner. The other sudo-enabled tasks (deploy:setup, deploy:cleanup, etc.) will now use the :admin_runner user (which by default is unset). [Jamis Buck]

lib/capistrano/recipes/deploy.rb

@@ -208,7 +208,9 @@ namespace :deploy do
     symlinks to the shared directory for the log, system, and tmp/pids \
     directories, and will lastly touch all assets in public/images, \
     public/stylesheets, and public/javascripts so that the times are \
-    consistent (so that asset timestamping works).
+    consistent (so that asset timestamping works).  This touch process \
+    is only carried out if the :normalize_asset_timestamps variable is \
+    set to true, which is the default.
   DESC
   task :finalize_update, :except => { :no_release => true } do
     run "chmod -R g+w #{latest_release}" if fetch(:group_writable, true)
@@ -224,10 +226,12 @@ namespace :deploy do
       ln -s #{shared_path}/pids #{latest_release}/tmp/pids
     CMD
 
+    if fetch(:normalize_asset_timestamps, true)
       stamp = Time.now.utc.strftime("%Y%m%d%H%M.%S")
       asset_paths = %w(images stylesheets javascripts).map { |p| "#{latest_release}/public/#{p}" }.join(" ")
       run "find #{asset_paths} -exec touch -t #{stamp} {} ';'; true", :env => { "TZ" => "UTC" }
     end
+  end
 
   desc <<-DESC
     Updates the symlink to the most recently deployed version. Capistrano works \