Comment 8 for bug 694772

I don't think it's a good idea to call "telinit u" if we're installing libc in a chroot, so I am considering this debdiff to revert eglibc to its older behavior of checking whether for a chroot before running telinit. I will send it to Debian as well, albeit I suspect the Linux specific test was a reason for the removal of this snippet in the first place.

I like Colin's idea of testing whether init really is upstart before signalling it with SIGTERM; I wonder how this will play when people replace sysvinit with upstart, so maybe we need to test for busybox or sysvinit specifically.