Merge branch 'template_train_replacement-sx' into jgrpp

# Conflicts:
#	src/window.cpp

src/gfx_func.h

@@ -145,6 +145,7 @@ bool FillDrawPixelInfo(DrawPixelInfo *n, int left, int top, int width, int heigh
 /* window.cpp */
 void DrawOverlappedWindowForAll(int left, int top, int right, int bottom);
 
+void SetMouseCursorBusy(bool busy);
 void SetMouseCursor(CursorID cursor, PaletteID pal);
 void SetAnimatedMouseCursor(const AnimCursor *table);
 void CursorTick();