Create a new libxl_freebsd.c file that contains OS-specific bits used
by libxl.
This currently defines which backend to use to handle disks, and
which hotplug scripts to execute.
Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
Cc: Ian Jackson <Ian.Jackson@eu.citrix.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>