setup_harddisks.pl & boot device

[John Bazik]

Setup_harddisks.pl assumes that / is the boot device, even if you
have a separate /boot partition and used the "boot" option to mark
it.  It does this in two places:

	1) in ParseConfigFile, line 348, it dies if / is not primary.
	2) in BuildNewPartTables, line 543, it dies if / is beyond the
	   8GB boot boundary.

It's pretty common practice to have a small /boot partition to make
a dual-boot configuration work on a large disk.

Minor nits aside, we're loving FAI here at Brown CS.

John Bazik
jsb at cs.brown.edu