rename archive.h to bb_archive.h. no code changes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/archival/libarchive/decompress_bunzip2.c b/archival/libarchive/decompress_bunzip2.c
index 4e46e68..cd31447 100644
--- a/archival/libarchive/decompress_bunzip2.c
+++ b/archival/libarchive/decompress_bunzip2.c
@@ -40,7 +40,7 @@
  */
 
 #include "libbb.h"
-#include "archive.h"
+#include "bb_archive.h"
 
 /* Constants for Huffman coding */
 #define MAX_GROUPS          6