8-8

1.Replace score matix BLOSUM62 with BLOSUM50.
2.Fix some  serious bugs of dynamic planning. And add retrace module.
That makes this module complete. Now GRN correlations gives the
prediction results which represent expectation of regulations.
3.Add artificial filtering module. Redistribute similarity values.
4.Using system time as file name to generate results to simplify
debug.(I'm so happy about that.)