header_verbose_list: show off_t size, not cast to (unsigned)
get_header_tar: support GNU tar's "base256" encoding

function                                             old     new   delta
get_header_tar                                      1536    1600     +64
header_verbose_list                                  242     257     +15

diff --git a/archival/tar.c b/archival/tar.c
index deb5c89..76f1a62 100644
--- a/archival/tar.c
+++ b/archival/tar.c
@@ -357,7 +357,8 @@
 	if (tbInfo->verboseFlag) {
 		FILE *vbFd = stdout;
 
-		if (tbInfo->tarFd == STDOUT_FILENO)	/* If the archive goes to stdout, verbose to stderr */
+		/* If archive goes to stdout, verbose goes to stderr */
+		if (tbInfo->tarFd == STDOUT_FILENO)
 			vbFd = stderr;
 		/* GNU "tar cvvf" prints "extended" listing a-la "ls -l" */
 		/* We don't have such excesses here: for us "v" == "vv" */