NBD 1:2.9.9-3

I just uploaded the Debian packages versioned 1:2.9.9-2 (almost immediately followed by 1:2.9.9-3, because I forgot to test part of it, and obviously that part turns out to be broken), containing some updates:

• Added a switch in the configuration file which will cause the initscript to not kill all nbd-client instances, which it does currently.
• Added initramfs scripts.

The two combined should allow for running a root filesystem on an NBD device. Note that the initramfs scripts haven't received any testing beyond my system yet; it's not impossible that they're broken in some regard. Treat them with some caution.

Having said that, testing would be welcome...

Next, I've also started work on partman-nbd. This is in an even more experimental and unfinished state, but the eventual goal is to support installing to an NBD device. Wouldn't that be nice.