[sv-cc] Proposal for 487 uploaded

The new proposal for 487:
. leaves the note associated with 32.34
. changes one term to match an equivalent one suggested by Bassam
. defers the definitions of vpiAndOp and vpiOrOp to Jim Vellenga's item
686.
. suggests 2 additional definitions to sv_vpi_user.h to define the 2
remaining terms.

Ralph