Bug#36787: cps rate wrong after a restore

[Chris Butler <chrisb@sandy.force9.co.uk>]

Package: apt
Version: 0.3.4

When apt restores a partial download, the CPS rate is wrong for a while.

At a guess, apt thinks that the already downloaded part of the file was
downloaded in the first second.

-- System Information
Debian Release: potato
Kernel Version: Linux downstairs 2.2.6 #3 Sun Apr 25 21:39:50 BST 1999 i686 unknown

Versions of the packages apt depends on:
ii  libc6           2.1.1-1        GNU C Library: Shared libraries and timezone
ii  libstdc++2.9    2.91.61-1      The GNU stdc++ library (egcs version)