HighFreqTerms patch

[Pablo Mendes]

Guys,
this is tiny and probably not relevant. But I'll bet a beer that at least a
dozen people had to dirtymod this class while they could have run it from
command line.
A 15 min time save that took 15 min to create. I guess it's a tie.

Best,
Pablo

--- HighFreqTerms.java
+++ ExtractStopwords.java
@@ -30,7 +30,7 @@
 public class HighFreqTerms {

   // The top numTerms will be displayed
-  public static final int numTerms = 100;
+  public static int numTerms = 100;

   public static void main(String[] args) throws Exception {
     IndexReader reader = null;
@@ -40,6 +40,10 @@
     } else if (args.length == 2) {
       reader = IndexReader.open(args[0]);
       field = args[1];
+    } else if (args.length == 3) {
+      reader = IndexReader.open(args[0]);
+      field = args[1];
+      numTerms = new Integer(args[2]);
     } else {
       usage();
       System.exit(1);
@@ -71,7 +75,7 @@
   private static void usage() {
     System.out.println(
          "\n\n"
-         + "java org.apache.lucene.misc.HighFreqTerms <index dir>
[field]\n\n");
+         + "java org.apache.lucene.misc.HighFreqTerms <index dir> [field]
[numTerms] \n\n");
   }
 }