Merge pull request #487 from commoncrawl/NUTCH-2754-max-crawl-delay

NUTCH-2754 fetcher.max.crawl.delay ignored if exceeding 5 min. / 300 sec.
diff --git a/src/java/org/apache/nutch/protocol/RobotRulesParser.java b/src/java/org/apache/nutch/protocol/RobotRulesParser.java
index 0671a8f..159f34f 100644
--- a/src/java/org/apache/nutch/protocol/RobotRulesParser.java
+++ b/src/java/org/apache/nutch/protocol/RobotRulesParser.java
@@ -78,6 +78,10 @@
       RobotRulesMode.ALLOW_NONE);
 
   private static SimpleRobotRulesParser robotParser = new SimpleRobotRulesParser();
+  static {
+    robotParser.setMaxCrawlDelay(Long.MAX_VALUE);
+  }
+
   protected Configuration conf;
   protected String agentNames;