Hide two warnings about boxing

Change-Id: I1cb7cdb81481019f4a55221d38d771fcc9451529
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>

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

 	 *             or DirCache file.  Or if {@code stage} is outside of the
 	 *             range 0..3, inclusive.
 	 */
+	@SuppressWarnings("boxing")
 	public DirCacheEntry(final byte[] newPath, final int stage) {
 		if (!isValidPath(newPath))
 			throw new IllegalArgumentException(MessageFormat.format(JGitText.get().invalidPath
 	 *             if the size exceeds the 2 GiB barrier imposed by current file
 	 *             format limitations.
 	 */
+	@SuppressWarnings("boxing")
 	public void setLength(final long sz) {
 		if (Integer.MAX_VALUE <= sz)
 			throw new IllegalArgumentException(MessageFormat.format(JGitText