added a build flag to stop __stack_chk_fail
added a build flag to stop __stack_chk_fail

yangjinecho/licode,lodoyun/licode,lynckia/licode,lynckia/licode,yangjinecho/licode,MModal/licode,lynckia/licode,yangjinecho/licode,MModal/licode,MModal/licode,lodoyun/licode,yangjinecho/licode,jcague/licode,lodoyun/licode,yangjinecho/licode,jcague/licode,lodoyun/licode,MModal/licode,MModal/licode,jcague/licode,lodoyun/licode,yangjinecho/licode,MModal/licode,yangjinecho/licode,lynckia/licode,jcague/licode,jcague/licode,lynckia/licode,lynckia/licode,lodoyun/licode,yangjinecho/licode,jcague/licode,jcague/licode,lodoyun/licode,MModal/licode,lynckia/licode