lguest.txt update

o Describe the new split configurations
o Highlight code documentation in drivers/lguest/README
o Point out necessity of having a getty on /dev/hvc0
o Remove gratuitous "m" in example
o Don't discuss I/O model here, stick to user documentation.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
1 file changed