HAWQ-537. Accept filenames with spaces
HAWQ-537. Accept filenames with spaces

outofmem0ry/incubator-hawq,outofmem0ry/incubator-hawq,lavjain/incubator-hawq,stanlyxiang/incubator-hawq,stanlyxiang/incubator-hawq,wengyanqing/incubator-hawq,lavjain/incubator-hawq,stanlyxiang/incubator-hawq,stanlyxiang/incubator-hawq,huor/incubator-hawq,huor/incubator-hawq,stanlyxiang/incubator-hawq,lavjain/incubator-hawq,outofmem0ry/incubator-hawq,stanlyxiang/incubator-hawq,stanlyxiang/incubator-hawq,outofmem0ry/incubator-hawq,lavjain/incubator-hawq,wengyanqing/incubator-hawq,jianlirong/incubator-hawq,jianlirong/incubator-hawq,lavjain/incubator-hawq,wengyanqing/incubator-hawq,outofmem0ry/incubator-hawq,huor/incubator-hawq,lavjain/incubator-hawq,outofmem0ry/incubator-hawq,jianlirong/incubator-hawq,lavjain/incubator-hawq,huor/incubator-hawq,outofmem0ry/incubator-hawq,outofmem0ry/incubator-hawq,wengyanqing/incubator-hawq,wengyanqing/incubator-hawq,wengyanqing/incubator-hawq,wengyanqing/incubator-hawq,huor/incubator-hawq,jianlirong/incubator-hawq,jianlirong/incubator-hawq,jianlirong/incubator-hawq,lavjain/incubator-hawq,huor/incubator-hawq,jianlirong/incubator-hawq,jianlirong/incubator-hawq,wengyanqing/incubator-hawq,huor/incubator-hawq