Make max. number of calculated occurrences configurable

Replace the constant _maxIncrementCount with a configurable variable
Note: The default should be "Infinite", but for occurences without an end date a limitation can be useful

ical.net/Ical.Net/Evaluation/RecurrencePatternEvaluator.cs

Lines 49 to 52 in 95bbc53

    
           public class RecurrencePatternEvaluator : Evaluator 
        
           { 
        
               private const int _maxIncrementCount = 1000;

	public class RecurrencePatternEvaluator : Evaluator
	{
	private const int _maxIncrementCount = 1000;