Renamed some benchmarks to follow global naming convention

...nchmarks/benchmarks/alexnet2_cifar10/alexnet2_cifar10.cpp

...ks/benchmarks/alexnet2_cifar10/alexnet2_cifar10_cudnn.cpp

...arks/benchmarks/alexnet2_cifar10/data/quant_ranges_rt.txt

...nchmarks/benchmarks/alexnet2_cifar10/data/tuner_confs.txt

...benchmarks/benchmarks/alexnet_cifar10/alexnet_cifar10.cpp

...arks/benchmarks/alexnet_cifar10/alexnet_cifar10_cudnn.cpp

...marks/benchmarks/alexnet_cifar10/data/quant_ranges_rt.txt

...enchmarks/benchmarks/alexnet_cifar10/data/tuner_confs.txt

...arks/benchmarks/resnet18_cifar10/data/quant_ranges_rt.txt

...nchmarks/benchmarks/resnet18_cifar10/data/tuner_confs.txt

...nchmarks/benchmarks/resnet18_cifar10/resnet18_cifar10.cpp

...ks/benchmarks/resnet18_cifar10/resnet18_cifar10_cudnn.cpp