Removed global header from DOS/Windows port

zsnes/src/dos/zfile.c

@@ -16,8 +16,13 @@
 //Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
 
+#include <stdio.h>
+#include <time.h>
+#include <zlib.h>
+#ifdef ZDOS
+#include <dos.h>
+#endif
 
-#include "gblhdr.h"
 
 #define DWORD unsigned int
 #define BYTE unsigned char