* Removed BiomeDef.h
* Removed ChunkDef.h from Globals.h
* Added to CONTRIBUTORS.
* Re-added empty last line to Globals.h
* Included stddef and StringUtils in BiomeDef.h
* Fixed build tools compiling. It compiles, but at what cost?
* Added include to src/Generating/Trees.h
* Include added in ChunkGeneratorThread.h
* Moved rearranged includes in LineBlockTracer.cpp
* Re-arrange headers in ChunkInterface.cpp
* Included ChunkDef.h in Path.h
* Included ChunkDef.h in NBTChunkSerializer.h
* Rearranged included and added required includes to headers.
* Removed unnecessary included in StringUtils.h.
When using ChunkWorx to generate multiple chunks, the server would sometimes fail an assert because it would generate a chunk even when it was successfully loaded. This was caused by chunks queued in cWorld's m_SetChunkDataQueue and thus being marked as "InQueue" although they were already loaded.
Solved by adding a new parameter to chunk coord callbacks specifying whether the operation succeeded or failed, and using that instead of the chunk presence flag to decide whether to generate or not.