Allow a UDP instance to have a simple real delay.
Allow a UDP instance to have a simple real delay.

The parser does not distinguish between module and UDP instances, so
a UDP delay is handled by the rules used for parsing module parameter
overrides. Although these rules had been relaxed to accept the case of
a simple decimal value (e.g. #10), they did not allow a simple real
value (e.g. #0.1).

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