Remove AUTO_VAR macro and _toString function (#592)

Minecraft.World/compile_flags.txt

@@ -0,0 +1,18 @@
+-xc++
+-m64
+-std=c++14
+-Wno-unused-includes
+-Wno-unsafe-buffer-usage-in-libc-call
+-Wno-unsafe-buffer-usage
+-Wno-unused-macros
+-Wno-c++98-compat
+-Wno-c++98-compat-pedantic
+-Wno-pre-c++14-compat
+-D_LARGE_WORLDS
+-D_DEBUG_MENUS_ENABLED
+-D_LIB
+-D_CRT_NON_CONFORMING_SWPRINTFS
+-D_CRT_SECURE_NO_WARNINGS
+-D_WINDOWS64
+-I
+./x64headers