Main: Adding LoggingNew.h as a replacement for Logging.h that allows us to #define LOG_GROUP like in the rest of the VBox code. It's just a temporary wrapper that includes <VBox/log.h> and prevents Logging.h from getting loaded. Eventually, both Logging.h and LoggingNew.h should go and most of the code should just define LOG_GROUP and include <VBox/log.h> at the top of the file like everyone else.
