SD2 update
[mr2954] Reorganize R2 thread bucket manager v0.5.4, add templated class for possibility continue parallilize tasks (no any changes must be currently). need check compile under win. related to #1402 and some more old. - also some rework in VMSS (to be continued) - statistic passed to template (hooks)
[mr2955] Reorganize R2 thread bucket manager part 2 - add config key for skip continents in VMSS - some more verbose config description
[mr2956] lock object to grid loading. testing.
[mr2957] add virtual Update() method to MaNGOS::Singleton (requires for future work) - not must have any effect, but possible compile problems (please report).
[mr2958] remove manual locking from Calendar. Singleton locks now must works fine. testing.
[mr2959] use ClassLevel locking instead of manual in WorldStateMgr. testing.
[mr2960]  use ClassLevel locking instead of manual in AccountMgr. testing.