Update common.js

Bugfix: outgoing url is wrong when the source url is 'http://a.b.c/d/??e/a.js,f/b.js,g/c.js?t=123456' (a combo url).
This is a online url 'http://g.tbcdn.cn/??kissy/k/1.4.0/seed-min.js,kissy/k/1.4.0/base-min.js,kissy/k/1.4.0/json-min.js,kissy/k/1.4.0/dom/base-min.js,kissy/k/1.4.0/event/base-min.js,kissy/k/1.4.0/event/custom-min.js,kissy/k/1.4.0/event/dom/base-min.js,kissy/k/1.4.0/event/dom/focusin-min.js' on the Alibaba CDNs. You can take it
for test.