portupgrade-2.2.2_1,2 corrupts portsdb

[Sergey Matveychuk]

Murilo Opsfelder Araújo wrote:
> Yesterday I had the same problem and garga@ helped me to solve that.
> He told me to change my ports database to dbm_hash.

It's not a fix really. A fix was committed.

Well, it's worth to add a few sanity checks for DB. Really working with
DB should be complete rewritten but I have a hard lack of time lately.

-- 
Dixi.
Sem.