#18 long values for delay objects

[Jan Decaluwe]

A delay objects expects an int as construction parameter.
However, for long simulations and/or long clock periods, long values maybe required to represent time. When these are used to construct new delay, the values may be of type long, even for small delays.

Solve this by allowing long values to contruct delays.

[Jan Decaluwe]

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Solved in 0.6dev5