* include/grub/i386/bsd.h (KERNEL_TYPE_NONE, KERNEL_TYPE_FREEBSD)
(KERNEL_TYPE_OPENBSD, KERNEL_TYPE_NETBSD): Convert to ...
(bsd_kernel_types): ... this enum.
* loader/i386/bsd.c (grub_cmd_freebsd_loadenv, grub_cmd_freebsd_module)
(grub_cmd_freebsd_module_elf): Abort with "You need to load the
kernel first." when `kernel_type' is set to KERNEL_TYPE_NONE.
(grub_bsd_load_aout, grub_bsd_load, grub_cmd_freebsd_loadenv)
(grub_cmd_freebsd_module, grub_cmd_freebsd_module_elf)
(GRUB_MOD_INIT (bsd)): Fix capitalization in a few error
messages.