Define WIN32_LEAN_AND_MEAN when importing windows.h

This way, when preprocessing, only the relevant windows API structures
will be generated.

LEGO1/dllmain.cpp

@@ -1,3 +1,7 @@
+#ifndef WIN32_LEAN_AND_MEAN
+#define WIN32_LEAN_AND_MEAN
+#endif
+
 #include <windows.h>
 
 // OFFSET: LEGO1 0x10091ee0

LEGO1/mxcriticalsection.h

@@ -1,6 +1,10 @@
 #ifndef MXCRITICALSECTION_H
 #define MXCRITICALSECTION_H
 
+#ifndef WIN32_LEAN_AND_MEAN
+#define WIN32_LEAN_AND_MEAN
+#endif
+
 #include <windows.h>
 
 class MxCriticalSection

LEGO1/mxdirectdraw.h

@@ -2,6 +2,10 @@
 #ifndef MXDIRECTDRAW_H
 #define MXDIRECTDRAW_H
 
+#ifndef WIN32_LEAN_AND_MEAN
+#define WIN32_LEAN_AND_MEAN
+#endif
+
 #include <ddraw.h>
 #include <windows.h>
 

LEGO1/mxioinfo.h

@@ -1,6 +1,10 @@
 #ifndef MXIOINFO_H
 #define MXIOINFO_H
 
+#ifndef WIN32_LEAN_AND_MEAN
+#define WIN32_LEAN_AND_MEAN
+#endif
+
 #include <windows.h>
 #include <mmsystem.h>
 

LEGO1/mxomnicreateparam.h

@@ -1,6 +1,10 @@
 #ifndef MXOMNICREATEPARAM_H
 #define MXOMNICREATEPARAM_H
 
+#ifndef WIN32_LEAN_AND_MEAN
+#define WIN32_LEAN_AND_MEAN
+#endif
+
 #include <windows.h>
 
 #include "mxomnicreateflags.h"

LEGO1/mxsemaphore.h

@@ -1,6 +1,10 @@
 #ifndef MX_SEMAPHORE_H
 #define MX_SEMAPHORE_H
 
+#ifndef WIN32_LEAN_AND_MEAN
+#define WIN32_LEAN_AND_MEAN
+#endif
+
 #include "mxtypes.h"
 #include <windows.h>
 

LEGO1/mxtimer.h

@@ -1,6 +1,10 @@
 #ifndef MXTIMER_H
 #define MXTIMER_H
 
+#ifndef WIN32_LEAN_AND_MEAN
+#define WIN32_LEAN_AND_MEAN
+#endif
+
 #include "mxcore.h"
 
 // VTABLE 0x100dc0e0

LEGO1/mxvideoparamflags.h

@@ -1,6 +1,10 @@
 #ifndef MXVIDEOPARAMFLAGS_H
 #define MXVIDEOPARAMFLAGS_H
 
+#ifndef WIN32_LEAN_AND_MEAN
+#define WIN32_LEAN_AND_MEAN
+#endif
+
 #include <windows.h>
 
 // Must be union with struct for match.