Changes from version 5 to 6
===========================

 - pstree: unknown display width expressed as zero width (TIOCGWINSZ) is
	   now correctly handled.
 - fuser: added -s for silent operation.
 - fuser: added non-zero return code if no processes using any file are
	  found.
 - pstree and fuser: non-printable characters in command names (fuser: also
     in file names) are now shown as \nnn (octal). \ is shown as \\.
 - added "install" target to Makefile to install binaries in /usr/local/bin
 - minor updates on all man pages.

Changes from version 4 to 5
===========================

 - killall: added interactive and verbose modes (options -i and -v)
 - fuser: added 0.99pl11 support (changed /proc/*/lib to /proc/*/mmap)
 - fuser: mmap'ed files and shared libraries are now marked with "m"
          (shlibs were marked with "s" and mmap'ed files weren't marked
          at all)

Changes from version 3 to 4
===========================

 - killall and fuser: now accept signal numbers too.
 - pstree: added listing of process trees by user name.
 - pstree: compaction sometimes generated wrong output.
 - fuser: did only recognize the first occurrence of a file when using
   the options -u or -v.
 - changed Makefile to create stripped impure executables.
