Fixed bug: repeat build in Mac OS, change to check file ModTime insetad of event time
Fixed bug: repeat build in Mac OS, change to check file ModTime insetad of event time

franzwilhelm/bee,beego/bee,aamsur/bee,qida/bee,qida/bee,springning/bee,ogero/bee,tguangch/bee,layeka/bee,BorisBorshevsky/bee,linkeo/bee,amrfaissal/bee,kyawmyintthein/bee,beego/bee