* MSVC: Fix '/std:c++11' is not a valid compiler option
* MSVC/MINGW: Define 'WIN32_LEAN_AND_MEAN' for the whole project
In some obscure cases 'Windows.h" got includet before that definition, which leaded to compilation warnings+errors
* MSVC: '/arch:SSE' is only available for x86
* MSVC: Fix float conversation
* MSVC/MINGW: use winthreads on Windows
* MSVC: 'USE_CMAKE_CONFIG' might be already definied by CMake build system
* MSVC: Use all available cpu cores for compiling
* Add missing include ctime and use std::time_t
Cache size is configurable by the meshgen_block_cache_size (default 20 MB).
New profiler stats:
- MeshUpdateQueue MapBlock cache hit %
- MeshUpdateQueue MapBlock cache size kB
Removes one type of stutter that was seen on the client when received MapBlocks
were being handled. (the "MeshMakeData::fill" stutter)
Kind of related to at least #5239
Originally preceded by these commits, now includes them:
- Move the mesh generator thread into src/mesh_generator_thread.{cpp,h}
- mesh_generator_thread.cpp: Update code style
- MeshUpdateThread: Modify interface to house a different implementation: Actual functionality will be changed by next commits.
- MeshMakeData: Add fillBlockData() interface (so that caller can fill in stuff from eg. a MapBlock cache)
