Find the width of net arrays correctly.
Find the width of net arrays correctly.

Add code to the generic get_array_word_size() function to correctly
find the width of net arrays and use this routine in the _vthr_
code as needed.

CastMi/iverilog,themperek/iverilog,CastMi/iverilog,themperek/iverilog,themperek/iverilog,CastMi/iverilog