TODO.efiboot revision 1.1 
1- efiboot
2 * handle UEFI variables
3 * boot from CD/DVD (bootable from CD/DVD, but root fs not found.)
4 * load boot.cfg from EFI system partition (FAT32)
5 * fix module_init(). need to allocate memory for modules.
6 * bootia32.efi can load kernel, but can't start kernel
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8- kernel
9 * handle UEFI variables (/dev/efivar)
10 * accelerated console
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12- userland
13 * efibootmgr like utility
14 * merge distrib/amd64/uefi-installimage to distrib/amd64/install-image
15 * merge distrib/amd64/uefi-installimage/Makefile.* to distrib/common/Makefile.*
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17- installer
18 * sysinst(8): handle dk(4) for install disk
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