Changes in version 0.17:

The new option '--mtime' has been added.

The new option '-p, --preserve-permissions' has been added.

Multi-threaded '-d, --diff' has been implemented. See chapters 'Internal
structure of tarlz' and 'Limitations of parallel tar decoding' in the manual
for details.

Tarlz now reports an error if a file name is empty (tarlz -tf foo "") or if
the archive is specified more than once.

Tarlz now reports corruption or truncation of the last header in a
multimenber file specifically instead of showing the generic message "Last
member in input file is truncated or corrupt."

The header <sys/sysmacros.h> is now not #included when compiling on BSD.

The new chapter 'Internal structure of tarlz' has been added to the manual.
