bugzillaId-451: maxscale main() exit code is always 0 after it daemonizes

This is imported from bugzilla item: http://bugs.mariadb.com/show_bug.cgi?id=451

Description Massimiliano 2014-06-30 18:50:51 UTC
The maxscale main() exit code is 0 after daemonize, so next failed action are not returned to caller (shell):

i.e. Failure in MAXSCALE_HOME results in effective return code 4 for:

maxscale -d -c /fake/dir

but is alway 0 for

maxscale -c /fake/dir ; echo $0

0

Daemonize should be called after latest check