log: Skip seconds when logging to syslog.

Logging to syslog tries to cut unneeded information from the log
line but misses the seconds, so actually the text that reaches
syslog looks like this:
{{{
Apr 16 09:44:24 gf oscam[9637]: :24        0 s >> OSCam <<  cardserver started, version 1.20-unstable_svn, build r8619 (x86_64-slackware-linux)
}}}

After this patch the seconds are correctly skipped and logged lines
look like this:
{{{
Apr 16 09:47:26 gf oscam[1438]:       0 s >> OSCam <<  cardserver started, version 1.20-unstable_svn, build r8620 (x86_64-slackware-linux)
}}}

git-svn-id: http://streamboard.de.vu/svn/oscam/trunk@8620 4b0bc96b-bc66-0410-9d44-ebda105a78c1