Core/Creatures: Set hover movement flag if bytes1 have hover flag and creature cannot fly
Core/Vehicles: Fixed accessing freed memory in Vehicle::RemoveAllPassengers - _pendingJoinEvents needs to be cleaned from events that had already executed or were aborted
Core/Vehicles: Minor cleanup in header file
Core/Vehicles: Corrected logging message format specifiers
Merge branch 'master' of github.com:TrinityCore/TrinityCore into 4.3.4