TODO.efiboot revision 1.2 
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.
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7- kernel
8 * handle UEFI variables (/dev/efivar)
9 * accelerated console
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11- userland
12 * efibootmgr like utility
13 * merge distrib/amd64/uefi-installimage to distrib/amd64/install-image
14 * merge distrib/amd64/uefi-installimage/Makefile.* to distrib/common/Makefile.*
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16- installer
17 * sysinst(8): handle dk(4) for install disk
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