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

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/archival/libarchive/init_handle.c b/archival/libarchive/init_handle.c
new file mode 100644
index 0000000..6644ea1
--- /dev/null
+++ b/archival/libarchive/init_handle.c
@@ -0,0 +1,22 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * Licensed under GPLv2 or later, see file LICENSE in this source tree.
+ */
+
+#include "libbb.h"
+#include "archive.h"
+
+archive_handle_t* FAST_FUNC init_handle(void)
+{
+	archive_handle_t *archive_handle;
+
+	/* Initialize default values */
+	archive_handle = xzalloc(sizeof(archive_handle_t));
+	archive_handle->file_header = xzalloc(sizeof(file_header_t));
+	archive_handle->action_header = header_skip;
+	archive_handle->action_data = data_skip;
+	archive_handle->filter = filter_accept_all;
+	archive_handle->seek = seek_by_jump;
+
+	return archive_handle;
+}