[sift] Add some optional code to print out sizeof(thread_data_t) to make it easier to tune thread_data_t.__pad
[sift] Add some optional code to print out sizeof(thread_data_t) to make it easier to tune thread_data_t.__pad

abanaiyan/sniper,abanaiyan/sniper,abanaiyan/sniper,abanaiyan/sniper,abanaiyan/sniper