rework windows nmake file

Keep object files separate between gui and tty builds as they
are not the same binary on windows.

The stubs.c file will no longer be necessary.

sys/windows/windsys.c

@@ -48,6 +48,7 @@ extern int GUILaunched;
 extern boolean getreturn_enabled;
 int redirect_stdout;
 
+#ifdef WIN32CON
 typedef HWND(WINAPI *GETCONSOLEWINDOW)();
 static HWND GetConsoleHandle(void);
 static HWND GetConsoleHwnd(void);
@@ -66,6 +67,21 @@ extern void safe_routines(void);
 
 int def_kbhit(void);
 int (*nt_kbhit)() = def_kbhit;
+#endif /* WIN32CON */
+
+#ifndef WIN32CON
+/* this is used as a printf() replacement when the window
+ * system isn't initialized yet
+ */
+void msmsg
+VA_DECL(const char *, fmt)
+{
+    VA_START(fmt);
+    VA_INIT(fmt, const char *);
+    VA_END();
+    return;
+}
+#endif
 
 char
 switchar(void)
@@ -187,8 +203,10 @@ return &szFullPath[0];
 }
 #endif
 
+#ifdef MSWIN_GRAPHICS
 extern void mswin_raw_print_flush(void);
 extern void mswin_raw_print(const char *);
+#endif
 
 /* fatal error */
 /*VARARGS1*/
@@ -211,8 +229,10 @@ VA_DECL(const char *, s)
         Strcat(buf, "\n");
         raw_printf(buf);
     }
+#ifdef MSWIN_GRAPHICS
     if (windowprocs.win_raw_print == mswin_raw_print)
         mswin_raw_print_flush();
+#endif
     VA_END();
     exit(EXIT_FAILURE);
 }
@@ -233,8 +253,10 @@ win32_abort(void)
             exit_nhwindows((char *) 0);
         iflags.window_inited = FALSE;
     }
+#ifdef WIN32CON
     if (!WINDOWPORT(mswin) && !WINDOWPORT(safestartup))
         safe_routines();
+#endif
     if (wizard) {
         raw_print("Execute debug breakpoint wizard?");
         if ((c = nhgetch()) == 'y' || c == 'Y')
@@ -368,6 +390,7 @@ void port_insert_pastebuf(char *buf)
     return;
 }
 
+#ifdef WIN32CON
 static HWND
 GetConsoleHandle(void)
 {
@@ -405,7 +428,7 @@ GetConsoleHwnd(void)
     /*       printf("%d iterations\n", iterations); */
     return hwndFound;
 }
-
+#endif /* WIN32CON */
 #endif
 
 #ifdef RUNTIME_PORT_ID
@@ -447,12 +470,14 @@ nethack_exit(int code)
      */
 
 
+#ifdef WIN32CON
     if (!GUILaunched) {
         windowprocs = *get_safe_procs(1);
         /* use our custom version which works
            a little cleaner than the stdio one */
         windowprocs.win_nhgetch = windows_console_custom_nhgetch;
     }
+#endif
     if (getreturn_enabled) {
         raw_print("\n");
         wait_synch();
@@ -460,6 +485,7 @@ nethack_exit(int code)
     exit(code);
 }
 
+#ifdef WIN32CON
 #undef kbhit
 #include <conio.h>
 
@@ -488,13 +514,16 @@ getreturn(const char *str)
     in_getreturn = FALSE;
     return;
 }
+#endif
 
 /* nethack_enter_windows() is called from main immediately after
    initializing the window port */
 void nethack_enter_windows(void)
 {
+#ifdef WIN32CON
     if (WINDOWPORT(tty))
         nethack_enter_consoletty();
+#endif
 }
 
 /* CP437 to Unicode mapping according to the Unicode Consortium */