Patch 2 of 3 from Debian Samba packagers:

Patch 2 of 3 from Debian Samba packagers:

The point is doing the following associations:

- non discardable state data (all TDB files that may need to be backed
  up) go to statedir
- shared data (codepage stuff) go to codepagedir

The patch *does not change* the default location for these
directories. So, there is no behaviour change when applying it.

The main change is for samba developers who have to think when dealing
with files that previously pertained to libdir whether they:
- go in statedir
- go in codepagedir
- stay in libdir