This patch pushes the non-blocking event control information to
the code generator. It adds the %evctl statements that are used
to put the event control information into the special thread
event control registers. The signed version (%evctl/s) required
the implementation of %ix/getv/s to load a signed value into
an index register. It then adds %assign/wr/e event control based
non-blocking assignment for real values. It also fixes the other
non-blocking real assignments to use Transport instead of inertial
delays.
Add a vvp_event_anyedge class to handle the special
case of .event statements of edge type. This also
frees the posedge/negedge types to handle all 4 inputs.
Implement table functor recv_vec4 method to receive
and process vectors.
Cary R
steve