NUTCH-2434 Add methods to reset parameters HTMLMetaTags
(apply patch contributed by Markus)
diff --git a/src/java/org/apache/nutch/parse/HTMLMetaTags.java b/src/java/org/apache/nutch/parse/HTMLMetaTags.java
index 7c301e1..23a9339 100644
--- a/src/java/org/apache/nutch/parse/HTMLMetaTags.java
+++ b/src/java/org/apache/nutch/parse/HTMLMetaTags.java
@@ -68,6 +68,13 @@
   }
 
   /**
+   * Sets <code>noFollow</code> to <code>false</code>.
+   */
+  public void setFollow() {
+    noFollow = false;
+  }
+
+  /**
    * Sets <code>noIndex</code> to <code>true</code>.
    */
   public void setNoIndex() {
@@ -75,6 +82,13 @@
   }
 
   /**
+   * Sets <code>noIndex</code> to <code>false</code>.
+   */
+  public void setIndex() {
+    noIndex = false;
+  }
+
+  /**
    * Sets <code>noCache</code> to <code>true</code>.
    */
   public void setNoCache() {
@@ -82,6 +96,13 @@
   }
 
   /**
+   * Sets <code>noCache</code> to <code>false</code>.
+   */
+  public void setCache() {
+    noCache = false;
+  }
+
+  /**
    * Sets <code>refresh</code> to the supplied value.
    */
   public void setRefresh(boolean refresh) {