Description of problem:
When I the new --log(file) option to %post in kickstart anaconda exits
with a backtrace stating that:

File "/usr/lib/anaconda/isys.py" Line 482, in getopt:
  return apply(_isys.getopt,args)
TypeError: bad argument --logfile unknown


Version-Release number of selected component (if applicable):
anaconda-10.0.3.17-1

How reproducible:
Always

Steps to Reproduce:
Create a kickstart file that has 
%post --logfile /var/log/kickstart.log

Additional info:

Seems to be a very easy fix, justt append logfile= and log= to the
argList value in kickstart.py on line 763, attaching a patch.