In an attempt to streamline upp-src package, I have decided ro replace 'flag' based definition of environment with compile-time detection based on predefined macros. I believe that it will make management of src package Makefile easier.
I have split this detection from Core.h to config.h. So far, Ubuntu32/64, Win32 MSC and Win32 Mingw (in ST) are tested; I suppose we will be adding more as more builds are tested
However, it upp-src Makefile does not work on your platform, Core/config.h is the place to check...