add operator[] support for smart ptr
add operator[] support for smart ptr

ywang2014/xlLib,pyq881120/xlLib,Streamlet/GoogleHelper,Streamlet/GoogleHelper,pyq881120/xlLib,ywang2014/xlLib,Streamlet/BlogTrans,Streamlet/GoogleHelper,Streamlet/xlFlashPlayer,Streamlet/RCVersion,Streamlet/MSPYForever,Streamlet/BlogTrans,Streamlet/RCVersion,MichaelMiao/xlLib,Streamlet/xlFlashPlayer,Streamlet/GoogleHelper,Streamlet/GoogleHelper,MichaelMiao/xlLib