add version constant for next feature release (6.3.0)

lucene/CHANGES.txt

@@ -30,6 +30,9 @@ Other
 
 * LUCENE-7360: Remove Explanation.toHtml() (Alan Woodward)
 
+======================= Lucene 6.3.0 =======================
+(No Changes)
+
 ======================= Lucene 6.2.0 =======================
 
 API Changes

lucene/core/src/java/org/apache/lucene/util/Version.java

@@ -59,6 +59,13 @@ public final class Version {
   @Deprecated
   public static final Version LUCENE_6_2_0 = new Version(6, 2, 0);
 
+  /**
+   * Match settings and bugs in Lucene's 6.3.0 release.
+   * @deprecated Use latest
+   */
+  @Deprecated
+  public static final Version LUCENE_6_3_0 = new Version(6, 3, 0);
+
   /**
    * Match settings and bugs in Lucene's 7.0.0 release.
    *  <p>

solr/CHANGES.txt

@@ -50,6 +50,23 @@ Optimizations
   check on every request and move connection lifecycle management towards the client.
   (Ryan Zezeski, Mark Miller, Shawn Heisey, Steve Davids)
 
+==================  6.3.0 ==================
+
+Consult the LUCENE_CHANGES.txt file for additional, low level, changes in this release.
+
+Versions of Major Components
+---------------------
+Apache Tika 1.13
+Carrot2 3.12.0
+Velocity 1.7 and Velocity Tools 2.0
+Apache UIMA 2.3.1
+Apache ZooKeeper 3.4.6
+Jetty 9.3.8.v20160314
+
+
+(No Changes)
+
+
 ==================  6.2.0 ==================
 
 Versions of Major Components