ipxe and mboot.c32

[robinsmidsrod]

I've gotten feedback that ESXi 5.1 doesn't seem to work with this approach (although 5.0 used to work). I'm not a regular esxi user, so I'm not sure what they might've changed.

Be aware that mboot.c32 actually decompresses the files before handing them over to the kernel. iPXE doesn't do that. If the files are gzipped you might need to manually gunzip them and rename them back to the original name (even with the .gz extension) for things to work. I can't recall who on our IRC channel debugged this approach a lot, but I seem to recall they got stuck somewhere. My suggestion is to just enable IMAGE_COMBOOT support in iPXE and use mboot.c32 for now.