code: function getBaseInfo() {
          // get base from current script file path
          // notice: timestamp
          var scripts = doc.getElementsByTagName('script'),
              i,
              info;
  
          for (i = scripts.length - 1; i >= 0; i--) {
              if ((info = getBaseInfoFromOneScript(scripts[i]))) {
                  return info;
              }
          }
  
          var msg = 'must load kissy by file name in browser environment: ' +
              'seed-debug.js or seed.js loader.js or loader-debug.js';
  
          S.log(msg, 'error');
          return null;
      }
docs: get base from seed-debug.js
  @return {Object} base for kissy
  @ignore
  
  for example:
  @example
  http://a.tbcdn.cn/??s/kissy/x.y.z/seed-min.js,p/global/global.js
  note about custom combo rules, such as yui3:
  combo-prefix='combo?' combo-sep='&'