add an option for xl::Dialog to ignore dialog message when doing modal
add an option for xl::Dialog to ignore dialog message when doing modal

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