Original source can be downloaded from OpenBSD at
ftp://ftp.openbsd.org/pub/OpenBSD/OpenSSH/portable/openssh-4.5p1.tar.gz

MD5 (openssh-4.5p1.tar.gz) = 6468c339886f78e8a149b88f695839dd
SHA1 (openssh-4.5p1.tar.gz) = 2eefcbbeb9e4fa16fa4500dec107d1a09d3d02d7

A list of deleted files is in README.DELETED.

Upgrading notes:
Update version.h in secure/lib/libssh.
Update ssh{,d}_config and ssh{,d}_config.5.