SNMP submodule uses BerkeleyDB, violates ability to use SNMP submodule

[Quanah Gibson-Mount]

Due to licensing changes perpetrated by Oracle to make BDB unusable, I find 
it curious that the Amavisd SNMP subagent depends on BDB.

See also: <https://en.wikipedia.org/wiki/Lightning_Memory-Mapped_Database>
<https://en.wikipedia.org/wiki/Lightning_Memory-Mapped_Database#License_Issues>

--Quanah

--

Quanah Gibson-Mount
Platform Architect
Zimbra, Inc.
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