[PATCH] add support for bootman to booty

[Elliot Peele]

These patches add support for bootman to booty as well as expose
extlinux as a choice in anaconda. For the time being I am trying to
maintain support for installs where bootman is not available.

The idea behind bootman is to use a single common bootloader config file
that could be used to generate a config file for any supported
bootloader. Currently grub and extlinux are the only supported
bootloaders. A snapshot of bootman can be found here:

ftp://download.rpath.com/autosource/bootman-0.20071120.tar.gz

Elliot