Zabbix

...G...PS. [ZBXNEXT-3687] Shared memory segments are now private

The shared memory management bits was re-worked for marking all
the shared memory segments used by the server and agent as private.
We do not create shared memory segments using a key, but only using
an id, also in this way we avoid potential conflicts with other applications
using the same unique keys for creating shared memory segments.
As a consequence of this, support for SQLite 3 for frontend and server
need to be removed as we will be unable to share mutexes with the
database engine.

[svn merge ^/branches/dev/ZBXNEXT-3687]