Please review: Issue 49237 - deprecation of old libdb

[Adam Tkac]

https://pagure.io/389-ds-base/issue/49237

https://pagure.io/389-ds-base/issue/raw/files/e94d4e8aaa9621f96c4301ee3db12c...
https://pagure.io/389-ds-base/issue/raw/files/c87637e957a488a0f786edb18ab3d7...

The patches themselves remove support of old libdb (< 4.7).

However there is still question about code in ldap/servers/slapd/back-ldbm/upgrade.c
I haven't touched it because I have no idea which on-disk libdb formats
we can assume that users have. Can we, for example, assume that all
existing DS installations which will upgrade to current master branch
have at least libdb 4 on-disk format and newer? If yes, the upgrade.c code
can be cleaned as well.

Regards, Adam