[z2443] There is no unit flag for mounted state. it is already handled by client when UNIT_FIELD_MOUNTDISPLAYID is set.

Fix cmangos/issues#395
[z2444] Fix failed assertions while playing with the Mac client.

Some high opcodes don't exist in 1.x and were causing the Mac client to
display a failed assertion report to the user.
[z2445] Fix PostgreSQL bindings and add support to build directly with PostgreSQL instead of MySQL.