Added verbose options for MatrixReader. Changed order of meta data columns. Commented out adding error messages and added related FIXME.

Added FIXMEs to observed errors when launched without parameters or with '--help'. Commented out result comparison.

Fixed implementation of error reporting. Made all formats be compared with cuSPARSE (format and cuSPARSE compared to CPU, not between each other, that would require Benchmarks.h to be changed). Added name of mtx being tested to MetaDataColumns. Code reformatting.

Found potential mistake in SpMV/spmv.h where MatrixReader doesn't need to be called twice. Commiting to show in meeting.

Implemented rough version of result comparison. Implemented benchmark for comparison of TNL CSR and Cusparse on GPU. Edited log file formatting.

Implemented for the benchmark to write the output of MatrixReader into the log file. BUG: Every other error message added into the Benchmark doesn't have a '!' as a prefix in the log file.

Copied tnl-benchmark-spmv files and spmv.h from BLAS to SpMV. Deleted min/max size and stepFactor. Not working yet, backup purposes.

Fixes #29

The former has been formally deprecated for a long time and in CUDA 10.0
it is finally properly marked as deprecated, so the compiler can print
warnings.