Need to customize installation flags passed to dbootstrap

[Christoph Lameter <christoph@lameter.com>]

debian-cd currently cannot be configured to pass flags to dboostrap.

This would be useful to create CDs that automatically install for us
keyboard and also do not prompt the use for the location of files but
simply use the CD paths.

this can be done right now by typing the following at the syslinux prompt

linux cdrom kbd=us

There needs to be some setting in CONF.sh

INSTALL_OPTIONS="cdrom kbd=us"

Those options need to be worked into the dos batch that invokes loadlin as
well as configured on the boot image (This could be tricky and involve
loopback mounts of boot image???)