Switched to v6.4.0

Author: sohaibiftikhar

server/src/main/java/org/elasticsearch/action/admin/indices/get/GetIndexRequest.java

@@ -81,7 +81,7 @@ public GetIndexRequest(StreamInput in) throws IOException {
             features[i] = Feature.fromId(in.readByte());
         }
         humanReadable = in.readBoolean();
-        if (in.getVersion().onOrAfter(Version.V_7_0_0_alpha1)) {
+        if (in.getVersion().onOrAfter(Version.V_6_4_0)) {
             includeDefaults = in.readBoolean();
         }
     }
@@ -155,7 +155,7 @@ public void writeTo(StreamOutput out) throws IOException {
             out.writeByte(feature.id);
         }
         out.writeBoolean(humanReadable);
-        if (out.getVersion().onOrAfter(Version.V_7_0_0_alpha1)) {
+        if (out.getVersion().onOrAfter(Version.V_6_4_0)) {
             out.writeBoolean(includeDefaults);
         }
     }

server/src/main/java/org/elasticsearch/action/admin/indices/get/GetIndexResponse.java

@@ -189,7 +189,7 @@ public void readFrom(StreamInput in) throws IOException {
         settings = settingsMapBuilder.build();
 
         ImmutableOpenMap.Builder<String, Settings> defaultSettingsMapBuilder = ImmutableOpenMap.builder();
-        if (in.getVersion().onOrAfter(Version.V_7_0_0_alpha1)) {
+        if (in.getVersion().onOrAfter(Version.V_6_4_0)) {
             int defaultSettingsSize = in.readVInt();
             for (int i = 0; i < defaultSettingsSize ; i++) {
                 defaultSettingsMapBuilder.put(in.readString(), Settings.readSettingsFromStream(in));
@@ -224,7 +224,7 @@ public void writeTo(StreamOutput out) throws IOException {
             out.writeString(indexEntry.key);
             Settings.writeSettingsToStream(indexEntry.value, out);
         }
-        if (out.getVersion().onOrAfter(Version.V_7_0_0_alpha1)) {
+        if (out.getVersion().onOrAfter(Version.V_6_4_0)) {
             out.writeVInt(defaultSettings.size());
             for (ObjectObjectCursor<String, Settings> indexEntry : defaultSettings) {
                 out.writeString(indexEntry.key);

server/src/test/java/org/elasticsearch/action/admin/indices/get/GetIndexResponseTests.java

@@ -52,7 +52,7 @@
 public class GetIndexResponseTests extends AbstractStreamableXContentTestCase<GetIndexResponse> {
 
     /**
-     * The following byte response was generated from the v6.3.0 tag with the following code snippet
+     * The following byte response was generated from the v6.3.0 tag
      */
     private static final String TEST_6_3_0_RESPONSE_BYTES =
         "AQhteV9pbmRleAEIbXlfaW5kZXgBA2RvYwNkb2OePID6KURGTACqVkrLTM1JiTdUsqpWKqksSFWyUiouKcrMS1eqrQUAAAD//" +