64-bit UEFI build is broken

[Seth Goldberg]

 Latest trunk (Linux host, configured with "--target=x86_64 
--with-platform=efi") stops while building btrfs:

gcc -E -DGRUB_LST_GENERATOR -Dgrub_fs_register=FS_LIST_MARKER 
-Dgrub_video_register=VIDEO_LIST_MARKER 
-Dgrub_parttool_register=PARTTOOL_LIST_MARKER 
-Dgrub_partition_map_register=PARTMAP_LIST_MARKER 
'-Dgrub_term_register_input(...)=INPUT_TERMINAL_LIST_MARKER(__VA_ARGS__)' 
'-Dgrub_term_register_output(...)=OUTPUT_TERMINAL_LIST_MARKER(__VA_ARGS__)' 
'-Dgrub_register_command(...)=COMMAND_LIST_MARKER(__VA_ARGS__)' 
'-Dgrub_register_extcmd(...)=EXTCOMMAND_LIST_MARKER(__VA_ARGS__)' 
'-Dgrub_register_command_p1(...)=P1COMMAND_LIST_MARKER(__VA_ARGS__)' 
-DHAVE_CONFIG_H -I. -I../../grub-core -I..  -Wall -W -I../../include 
-I../include  -DGRUB_MACHINE_EFI=1 -DGRUB_MACHINE=X86_64_EFI -nostdinc 
-isystem /usr/lib/gcc/i686-linux-gnu/4.6.1/include -DGRUB_FILE=\"fs/btrfs.c\" 
-I. -I../../grub-core -I.. -I../.. -I../../include -I../include 
-I../../grub-core/lib/posix_wrap -I../../grub-core/lib/minilzo 
-DMINILZO_HAVE_CONFIG_H   ../../grub-core/fs/btrfs.c ../../grub-core/lib/crc.c 
> btrfs.marker.new || (rm -f btrfs.marker; exit 1)
In file included from ../../grub-core/lib/minilzo/lzoconf.h:75:0,
                 from ../../grub-core/lib/minilzo/minilzo.h:60,
                 from ../../grub-core/fs/btrfs.c:29:
../../grub-core/lib/minilzo/lzodefs.h:849:6: error: #error "this should not 
happen"
make[3]: *** [btrfs.marker] Error 1


  It's not expecting sizeof(ulong_t) to exceed 32-bits.

 --S