CentrED

- Added ref counting to TMaterial
- Added cache growing to TCacheManager
- Fixed ImagingOptions.inc to not include JPEG support
- Fixed TfrmRadar to save the radar map to the correct location
- Fixed statics using the wrong hue when being painted
- Removed obsolete TLandTextureManager.GetFlatLandMaterial (and the according cache)

- Added iterator to TCacheManager
- Added access (CanBeWritten) tracking to TStaticItem
- Moved TLandscape.UpdateStaticsPriorities to TStaticItem.UpdatePriorities
- Moved ULandscape.CompareWorldItems to UWorldItem
- Renamed TSeperatedStaticBlock.RefreshList to RebuildList...