Add database versions to javadoc of TCP protocol versions

h2/src/main/org/h2/engine/Constants.java

@@ -47,61 +47,73 @@ public class Constants {
 
     /**
      * The TCP protocol version number 6.
+     * @since 1.0.72 (2008-05-10)
      */
     public static final int TCP_PROTOCOL_VERSION_6 = 6;
 
     /**
      * The TCP protocol version number 7.
+     * @since 1.2.141 (2010-08-22)
      */
     public static final int TCP_PROTOCOL_VERSION_7 = 7;
 
     /**
      * The TCP protocol version number 8.
+     * @since 1.2.143 (2010-09-18)
      */
     public static final int TCP_PROTOCOL_VERSION_8 = 8;
 
     /**
      * The TCP protocol version number 9.
+     * @since 1.3.158 (2011-07-17)
      */
     public static final int TCP_PROTOCOL_VERSION_9 = 9;
 
     /**
      * The TCP protocol version number 10.
+     * @since 1.3.162 (2011-11-26)
      */
     public static final int TCP_PROTOCOL_VERSION_10 = 10;
 
     /**
      * The TCP protocol version number 11.
+     * @since 1.3.163 (2011-12-30)
      */
     public static final int TCP_PROTOCOL_VERSION_11 = 11;
 
     /**
      * The TCP protocol version number 12.
+     * @since 1.3.168 (2012-07-13)
      */
     public static final int TCP_PROTOCOL_VERSION_12 = 12;
 
     /**
      * The TCP protocol version number 13.
+     * @since 1.3.174 (2013-10-19)
      */
     public static final int TCP_PROTOCOL_VERSION_13 = 13;
 
     /**
      * The TCP protocol version number 14.
+     * @since 1.3.176 (2014-04-05)
      */
     public static final int TCP_PROTOCOL_VERSION_14 = 14;
 
     /**
      * The TCP protocol version number 15.
+     * @since 1.4.178 Beta (2014-05-02)
      */
     public static final int TCP_PROTOCOL_VERSION_15 = 15;
 
     /**
      * The TCP protocol version number 16.
+     * @since 1.4.194 (2017-03-10)
      */
     public static final int TCP_PROTOCOL_VERSION_16 = 16;
 
     /**
      * The TCP protocol version number 17.
+     * @since 1.4.197 (TODO)
      */
     public static final int TCP_PROTOCOL_VERSION_17 = 17;