initramfs-tools Etch 0.85i update

[maximilian attems <max@stro.at>]

hello,

please review for a stable release those 2 changes,
cherry picked from master
http://git.debian.org/?p=kernel/initramfs-tools.git;a=shortlog;h=refs/heads/etch

the Xen boot fix is needed for partial upgrades,
as none of the newer linux-images depends on latest initramfs-tools.

the later one has been debugged today by axel beckert and causes
update-initramfs to fail with an unbootable initramfs in stable.

thanks for review, as soon as acked i'll upload to stable
with no other changes.

greetings

-- 
maks