fixed daemon stop on sles

sles uses the basename only in pkill:
naemon    4674     1  0 11:29 ?        00:00:01 naemon -d /etc/naemon/naemon.cfg
while redhat uses /usr/bin/naemon.
So just use both variants as the pkill is limited to the user anyway.

Signed-off-by: Sven Nierlein <sven@consol.de>