Closes#4236
CMake now creates a header file in the build directory under the path "include/Globals.h" which just includes "src/Globals.h" with an absolute path. Then instead of adding "src/" to the include directories, it adds "include/".
#include "Globals.h" still works by including the build generated file and any other src-relative path will not work.
When a new block was placed that has a corresponding RedstoneHandler the PowerData for the position was cached, but never deleted and remained unchanged when the block got destroyed. The RedstoneSimulator now erases all cached PowerData for positions where the block doesn't have a RedstoneHandler (i.e. Air).