[mr2680] some limitations to VehicleKit::Dismount destination poit se…

…lection. related to #1288

Tagged version 0.17 (12111) for WotLK

MaNGOS 0.16 release (3.3.3a)

MaNGOS 0.16 dev2 -- moving from client 3.3.2

Orangvirus main server (unpatched), october 2009, client version 3.1.3

MaNGOS 0.16 dev1 -- moving from client 3.3.0a

MaNGOS 0.15 -- moving from client 3.2.2a

MaNGOS 0.14 -- moving from client 3.1.3

MaNGOS 0.13 -- moving from client 3.0.9

MaNGOS 0.13 dev2 -- moving from client 3.0.8a