Ruby Enterprise Edition symlinks

This will save you from playing with PATH: ```bash sudo ln -fs /opt/ruby-enterprise-1.8.6-20090610 /opt/ruby-enterprise sudo ln -fs /opt/ruby-enterprise/bin/gem /usr/bin/gem sudo ln -fs /opt/ruby-enterprise/bin/irb /usr/bin/irb sudo ln -fs /opt/ruby-enterprise/bin/rake /usr/bin/rake sudo ln -fs /opt/ruby-enterprise/bin/rails /usr/bin/rails sudo ln -fs /opt/ruby-enterprise/bin/ruby /usr/bin/ruby ``` Passsenger.conf is also simplified: ```bash LoadModule passenger_module /opt/ruby-enterprise/lib/ruby/gems/1.8/gems/passenger-2.2.5/ext/apache2/mod_passenger.so PassengerRoot /opt/ruby-enterprise/lib/ruby/gems/1.8/gems/passenger-2.2.5 PassengerRuby /opt/ruby-enterprise/bin/ruby ```