I think that the docs for the "--append" option for the bootloader command is
missing a "=". 

If you look in kickstart.py from anaconda:

        (args, extra) = isys.getopt(args, '',
                [ 'append=', 'location=', 'useLilo', 'lba32',
                  'password=', 'md5pass=', 'linear', 'nolinear',
                  'upgrade'])

It looks like the 'append' tag needs an "=".  It's also not clear what the
proper syntax for the kernel parameters is supposed to be.  

For example: 
1) Do I need to put the parameters in quotation marks?  Probably not, but it's
not clear.

2) If there's more than one, do they need to be comma separated?  Or does each
additional parameter need another "append" tag like:
bootloader --append=nodma --append=noapic

We need more information.  Note: I'm not sure what the correct answer is here. 
Maybe check with katzj.