Cleanup and ignore automatically generated files
Remove executable flag from non script files
nfcapd has zombies when both -x and -e are used

After a second rotation cycle nfcapd has a zombie child and stops
executing external programs. It seems that ExpireDir() function overrides
SIGCHLD and a few other signal handlers set by the launcher().
Fix aggregated flow count in stats

If flows in file are aggregated, stats will count them incorrectly.
Merge remote branch 'vytautas/local'