Implement DirCacheEntry.toString() to ease debugging

Change-Id: I9aa1b5817a18fb340411f47b25b6711d533590fd
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>

org.eclipse.jgit/src/org/eclipse/jgit/dircache/DirCacheEntry.java

 		return toString(path);
 	}
 
+	/**
+	 * Use for debugging only !
+	 */
+	@Override
+	public String toString() {
+		return getFileMode() + " " + getLength() + " " + getLastModified()
+				+ " " + getObjectId() + " " + getStage() + " "
+				+ getPathString() + "\n";
+	}
+
 	/**
 	 * Copy the ObjectId and other meta fields from an existing entry.
 	 * <p>