Revert "Project modernization (#630)"

This code was not tested and breaks in Release builds, reverting to restore
functionality of the nightly. All in-game menus do not work and generating
a world crashes.

This reverts commit a9be52c41a.

Minecraft.World/x64headers/extraX64.h

@@ -120,7 +120,7 @@ public:
 		else
 		{
 			LeaveCriticalSection(&m_cs);
-			return nullptr;
+			return NULL;
 		}
 	}
 private:
@@ -332,10 +332,10 @@ public:
 #define PIXSetMarkerDeprecated(a, b, ...) PIXSetMarker(a, L ## b, __VA_ARGS__)
 #define PIXAddNamedCounter(a, b) PIXReportCounter( L ## b, a)
 #else
-inline void PIXAddNamedCounter(int, const char*, ...) {}
-inline void PIXBeginNamedEvent(int, const char*, ...) {}
-inline void PIXEndNamedEvent() {}
-inline void PIXSetMarkerDeprecated(int, const char*, ...) {}
+void PIXAddNamedCounter(int a, const char *b, ...);
+void PIXBeginNamedEvent(int a, const char *b, ...);
+void PIXEndNamedEvent();
+void PIXSetMarkerDeprecated(int a, const char *b, ...);
 #endif
 
 void XSetThreadProcessor(HANDLE a, int b);