opkg: Change opkglibdir to libdir

* This moves lists, info, alternatives and status from
  /var/lib/opkg to /usr/lib/opkg.
  Lists and info can be recreated from feed, but alternatives
  and status need to be migrated, otherwise upgrade path is
  completely broken.
* Everybody needs to reflash new image now.

[OWEBOS-2896] opkg stores its database under /var/lib

Open-webOS-DCO-1.0-Signed-off-by: Martin Jansa <martin.jansa@palm.com>
Change-Id: I8a38f8bb792c5bebc87e38ce26440ad159489f0e
Reviewed-on: http://g2g.palm.com/1416
Reviewed-by: Build Verification
Reviewed-by: Herb Kuta <herb.kuta@palm.com>
Reviewed-by: Martin Jansa <martin.jansa@palm.com>
Tested-by: Martin Jansa <martin.jansa@palm.com>
Reviewed-by: Susan Montooth <susan.montooth@palm.com>