Added more debug output to the CUDA handler functions
Added a function for grouping of SCCs for better performance
Added functionality and accessors to the SparseMatrix
Former-commit-id: 770aec1b09
Added accessors for the SparseMatrix as I need access to the internal vectors.
Added a pure SPMV Kernel interface to check the kernel for errors.
Former-commit-id: 46e1449eeb