Generator : Updated HD7970 TA to a more stable profile.

From 1.2 ~ 2.6TFLOP/s to stable 2.2~2.3 TFLOP/s
Generator : #pragma unroll now always disabled

Other changes in the template seem to have resolved the issue with NVidia
Autotuner : Added a command line interface for gemm_autotuning

Contains the add of TCLAP (Header-Only, MIT Licensed) command line parsing library