request add db45/db46 support to mail/exim port

[Xin LI]

snowcrash+freebsd wrote:
> hi,
> 
> i've fbsd 62Rp7 installed.
> 
> i've updated my sys to use db46 (berkeley db), and set
> WITH_BDB_VER/USE_BDB/etc accordingly in make.conf ...
> 
> current portupgrade complains:
> 
>  ** Port marked as IGNORE: mail/exim:
>          is marked as broken: WITH_BDB_VER must be either 1, 4, 41, 42, 43 or 44
> 
> fix seems trivial,


Sounds great, just one point: I'd prefer seeing that exim would make use 
of bsd.database.mk.  I have Cc'ed maintainer (krion@).

Cheers,