override max chunks (for debugging)

Author: Vladimir Kotal

opengrok-indexer/src/main/java/org/opengrok/indexer/history/MercurialRepository.java

@@ -57,6 +57,8 @@ public class MercurialRepository extends RepositoryWithPerPartesHistory {
 
     private static final long serialVersionUID = 1L;
 
+    public static final int MAX_CHANGESETS = 256;
+
     /**
      * The property name used to obtain the client command for this repository.
      */
@@ -145,6 +147,10 @@ String determineBranch(CommandTimeoutType cmdType) throws IOException {
         return executor.getOutputString().trim();
     }
 
+    public int getPerPartesCount() {
+        return MAX_CHANGESETS;
+    }
+
     private String getRevisionNum(String changeset) throws HistoryException {
         String[] parts = changeset.split(":");
         if (parts.length == 2) {