[BOOTMGR]: Support for launching a recovery sequence.

[BOOTMGR]: Stub support for boot errors.
[BOOTMGR]: Stubplement support for device creation for boot applications (only for fully specified devices)
[BOOTMGR]: Implement support for execution transfer, including recovery mode/sequence.
[BOOTMGR]: Implement support for launching a boot entry.
[BOOTLIB]: Support for EFI Firmware device enumeration, driver attachment, and comparison.
[BOOTLIB]: Support for appending BOOLEAN or INTEGER BCD options.
Next step is the PE loader.

svn path=/trunk/; revision=70618

Author: ionescu007