Method ADT.CircularList()->_search()

Method _search: int _search(mixed value, void|int start)
Description: Search the list for a specific value. Return the index of the first value that is equal to value . If no value was found UNDEFINED is returned instead
Parameter value: The value to find
Parameter start: If a start value is supplied it will start searching at the index start .
Returns: Returns the index of the found value or UNDEFINED.
Throws: An error if the start is out of range.