When the build system is a chroot with no user logged in , all w tests fail because of {1,} match rule for the userline
Allow 0 match replacing {1,} with *
Signed-off-by: Gilles Espinasse <g.esp@free.fr>
Makefile will now only test for Linux systems, a work around in the
makefile due to some silly redefine restrictions.
uptime and w now won't error due to being one user logged in, thanks to
Sami for the patch
kill processes by pid test commented out due to false negatives
pwdx process 1 check also commented out due to false negatives
