fix new sequence&EC order, and prefix parse bug
fix typedef re-define issue
Merge pull request #772 from lyao2/scrollingUT

this only solve the problem temporarily. but for the building of tests working, merge this first. 
we need to re-consider the including of typedef headers
Merge pull request #771 from huili2/newseqorder_prefixerror_bugfix

fix new sequence&EC order, and prefix parse bug