reorganization, because new stuff is coming and I needed the current names.
compile and profile with the following from within the src folder:

nvcc -arch=sm_30 benchmarks.cu normal_addition_benchmark.cu interleaved_addition_benchmark.cu coalesced_interleaved_addition_benchmark.cu bignum_conversions.cpp random_bignum_generator.cpp -o ../bin/benchmarks -lgmp; nvprof --print-gpu-trace --normalized-time-unit us ../bin/benchmarks