Merging upstream version 0.21.

Signed-off-by: Daniel Baumann <daniel@debian.org>

doc/tarlz.1

@@ -1,5 +1,5 @@
 .\" DO NOT MODIFY THIS FILE!  It was generated by help2man 1.47.16.
-.TH TARLZ "1" "January 2021" "tarlz 0.19" "User Commands"
+.TH TARLZ "1" "June 2021" "tarlz 0.21" "User Commands"
 .SH NAME
 tarlz \- creates tar archives with multimember lzip compression
 .SH SYNOPSIS
@@ -72,6 +72,9 @@ use <date> as mtime for files added to archive
 \fB\-n\fR, \fB\-\-threads=\fR<n>
 set number of (de)compression threads [2]
 .TP
+\fB\-o\fR, \fB\-\-output=\fR<file>
+compress to <file>
+.TP
 \fB\-p\fR, \fB\-\-preserve\-permissions\fR
 don't subtract the umask on extraction
 .TP
@@ -90,6 +93,9 @@ verbosely list files processed
 \fB\-x\fR, \fB\-\-extract\fR
 extract files/directories from an archive
 .TP
+\fB\-z\fR, \fB\-\-compress\fR
+compress existing POSIX tar archives
+.TP
 \fB\-0\fR .. \fB\-9\fR
 set compression level [default 6]
 .TP
@@ -131,10 +137,13 @@ number of 1 MiB output packets buffered [64]
 .TP
 \fB\-\-check\-lib\fR
 compare version of lzlib.h with liblz.{a,so}
+.TP
+\fB\-\-warn\-newer\fR
+warn if any file is newer than the archive
 .PP
 Exit status: 0 for a normal exit, 1 for environmental problems (file not
 found, files differ, invalid flags, I/O errors, etc), 2 to indicate a
-corrupt or invalid input file, 3 for an internal consistency error (eg, bug)
+corrupt or invalid input file, 3 for an internal consistency error (e.g. bug)
 which caused tarlz to panic.
 .SH "REPORTING BUGS"
 Report bugs to lzip\-bug@nongnu.org