Merge branch 'master' into win_zuffy
remove ctrbarmanager

remove part of ctrbarmanager code in player
bug fix.

replace nextstream bug.
- the _progressCacheTime set to 0 before disptach buffer start event.
then the curIndex always setted to 0. fix:( move the  play_start event
before buffer.full callback.)
clean the code.

remove ctrbarmanager in player and delete the unuseable comment.
clear unuseable code in player
Merge branch 'win_zuffy'