ReachabilityCheckers: @since 5.4

The new ReachabilityChecker interface and its implementations are marked
as @since 5.5, but they will make it to the 5.4 release.

Change-Id: I88c31b3300ccf35d18c35faddb2517f0a57bdcfd
Signed-off-by: Ivan Frade <ifrade@google.com>

org.eclipse.jgit/src/org/eclipse/jgit/revwalk/BitmappedReachabilityChecker.java

@@ -56,7 +56,7 @@ import org.eclipse.jgit.lib.NullProgressMonitor;
 /**
  * Checks the reachability using bitmaps.
  *
- * @since 5.5
+ * @since 5.4
  */
 public class BitmappedReachabilityChecker implements ReachabilityChecker {
 

org.eclipse.jgit/src/org/eclipse/jgit/revwalk/PedestrianReachabilityChecker.java

@@ -53,7 +53,7 @@ import org.eclipse.jgit.errors.MissingObjectException;
  * Checks the reachability walking the graph from the starters towards the
  * target.
  *
- * @since 5.5
+ * @since 5.4
  */
 public class PedestrianReachabilityChecker implements ReachabilityChecker {
 

org.eclipse.jgit/src/org/eclipse/jgit/revwalk/ReachabilityChecker.java

@@ -55,7 +55,7 @@ import org.eclipse.jgit.errors.MissingObjectException;
  * Note that this checks the reachability of commits (and tags). Trees, blobs or
  * any other object will cause IncorrectObjectTypeException exceptions.
  *
- * @since 5.5
+ * @since 5.4
  */
 public interface ReachabilityChecker {