Handle that version "level" might contain "sp1", "a".....

           var end= supp_version.indexOf("-");

           if (end == -1) end= supp_version.length;

           var app_version= supp_version.substring(0, end);

           app_version+= ".0";

           var fourth_element= 0;

           if(app_version.match(/[a-z]$/)) {

               fourth_element+= (1 + app_version.charCodeAt(end-1) - "a".charCodeAt(0));

               app_version= app_version.substring(0,--end);

           }

           if(app_version.match(/sp[1-9]$/)) {

               fourth_element+= 100*(app_version.charCodeAt(end-1) - "0".charCodeAt(0));

               app_version= app_version.substring(0, end-3);

               end-= 3;

           }

           app_version+= "." + fourth_element;

           break;

      case "arch":

           var app_arch= parts[1];