Bug#614684: apt-get should not complain about missing partial folders

[Adam Heath <doogie@brainfood.com>]

package: apt
version: 0.7.11
severity: minor

I exclude both /var/lib/apt and /var/cache/apt from my backups. 
There's no reason to save any of those files, as they can always be 
refetched.

However, when I do a restore, I get errors from apt, like this:

E: Lists directory /var/lib/apt/lists/partial is missing.

or

E: Archive directory /var/cache/apt/archives/partial is missing.

Why can't apt-get just recreate those folders, when they don't exist?