instead of hardcoding the latest passenger release, this does a dir l…

…isting and takes the last passenger dir which is the latest when sorted alphabetically

Signed-off-by: Mike Bailey <mike@bailey.net.au>

lib/deprec/recipes/app/passenger.rb

@@ -3,11 +3,10 @@
   namespace :deprec do 
     namespace :passenger do
 
-      set(:passenger_install_dir) { 
+      set(:passenger_install_dir) {
         if ruby_vm_type == :ree
-          # XXX We can't predict the version included with REE! :-(
-          # XXX Need to find a workaround 
-          "#{ree_install_dir}/lib/ruby/gems/1.8/gems/passenger-2.2.2"
+          base_dir = "#{ree_install_dir}/lib/ruby/gems/1.8/gems/"
+          latest_passenger_version = Dir[base_dir + 'passenger-*'].last
         else
           '/opt/passenger'
         end