rename archival/libunarchive -> archival/libarchive; move bz/ into it

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

archival/libarchive/lzo1x_1o.c

@@ -0,0 +1,35 @@
+/* LZO1X-1(15) compression
+
+   This file is part of the LZO real-time data compression library.
+
+   Copyright (C) 1996..2008 Markus Franz Xaver Johannes Oberhumer
+   All Rights Reserved.
+
+   Markus F.X.J. Oberhumer <markus@oberhumer.com>
+   http://www.oberhumer.com/opensource/lzo/
+
+   The LZO library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2 of
+   the License, or (at your option) any later version.
+
+   The LZO library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with the LZO library; see the file COPYING.
+   If not, write to the Free Software Foundation, Inc.,
+   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+#include "libbb.h"
+#include "liblzo.h"
+
+#define D_BITS          15
+#define D_INDEX1(d,p)   d = DM(DMUL(0x21,DX3(p,5,5,6)) >> 5)
+#define D_INDEX2(d,p)   d = (d & (D_MASK & 0x7ff)) ^ (D_HIGH | 0x1f)
+
+#define DO_COMPRESS     lzo1x_1_15_compress
+
+#include "lzo1x_c.c"