ztaskd command incompatible with python < 2.6

[esatterwhite]

on line 146 of the ztaskd command where the filehandler is created, it uses the delay kwarg which was introduced in python2.6
removing it makes it usable with earlier versions of python

    if logfile:
        handler = logging.FileHandler(logfile )

[michaelmior]

Perhaps this would be better to retain the use of delay:

if logfile:
    if sys.version_info < (2, 6):
        handler = logging.FileHandler(logfile)
    else:
        handler = logging.FileHandler(logfile, delay=True)

Alternatively, you could catch the TypeError which gets thrown if delay isn't supported.