[mr2582] improve auto_update procedure - add table masquerade for correct DB updating from non-modified sources.
[mr2583] copy improved WorldLocation structure from testing branch (not use full functionality now!).
[mr2588] fix problem with link initialization on old compilers (error: ‘G3D::Vector3::x’ cannot appear in a constant-expression). thx to Termaltake.
[mr2599] very detailed definition of the methods in WorldLocation classes chain (currently no real problems found). may solve problems or give point for corrects.