Rewrote the way of running sysbench tests in the shell

Hello Tsuna,

I had already written my own code before coming across yours, and I am particularly interested in the graphing that you've set up.  
I felt that my way of running tests is a bit easier on the eyes, and nicer to configure when it comes to changing the options of each test.  
Hopefully it is readable enough, but the python sysbench.glue.py file generates commands based on the parameters in the options list.  
I am yet to set up the OLTP tests, as it is a bit over my head right now to be honest.

Please review my request and feel free to make any changes.

Thanks,
Vasili