CR-22 - Refining product model parameters

With reference to Section 4, Gnome-MSR2009: Product model of
gnomemsr2009_model_var_v03.pdf recalculate product model parameters
whenever necessary.

Will affect menu items:

Choose:
1. Include Developers Who Comment on at Least One Bug in RESOLVED
Status.
2. Include Developers who Own at Least One Bug in RESOLVED Status.
Please Enter Your Choice (1 or 2): 2

Available Services
...
8. Generate Project Data Summary in CSV Format for a Given Set of
Products (call this product data summary)