[sv-cc] proposal for #482 revised

I uploaded a new proposal for #482.
Apart from changes discussed in the last meeting I found one more
issue with class var, i.e. the property vpiAccessType.
 From the Notes, it appears that it was intended for what is now called
visibility (vpiVisibility).
Rather than changing it to vpiVisibility, I removed it because the
variable diagram has it already. Let me know your comments.

regards,
-sachi