base-files, initscripts: stop the populate-volatiles madness. reinstate populate...

base-files, initscripts: stop the populate-volatiles madness. reinstate populate-var.sh. fix upgrade path by re-adding /etc/resolv.conf.

- populate-volatiles.sh needs > 5 seconds to create a handful of files/directories
- removing /etc/resolv.conf from the package broke upgrades since ipkg will
  remove it and no longer be able to perform DNS lookups
- also add /etc/resolv.conf to CONFFILES
- and remove all sorts of cruft that has accumulated over the years
- this was all working fine 2 years ago...

Signed-off-by: Rene Wagner <rw@handhelds.org>