add memcached configuration option, small corrections for the build process and add installDrupal.sh file to the release
<%- @types.sort.each do |type| -%>
AddOutputFilterByType DEFLATE <%= type %>
<%- end -%>
<%- @notes.sort.each do |type,note| -%>
DeflateFilterNote <%= type %> <%=note %>
<%- end -%>