xenlight: binary is xenops_xl_main.native (-> xenopsd-xl)

Signed-off-by: David Scott <dave.scott@citrix.com>
Document a few missing options in the .conf file

Signed-off-by: David Scott <dave.scott@citrix.com>
make install: fix the config file creator

Signed-off-by: David Scott <dave.scott@citrix.com>