Arnoldi Iteraiton implemented
Variable Dense Matrix tested
Arnoldi Iteration + Least Square implemented
Backwardssubstitution and Testing
Tested base version, unoptimized
Combine MultiplyScalar and Sub in VSPAN to optimze VSPAN duration
Anpassungen PERF
Restart eingebaut
Perf updated
Preconditioner implemented using gbmv
-Fixed various bugs,  fully tested and working.
Without Restart and Preconditioning
Merge branch 'gmres_basic'