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.

win/tty/wintty.c

@@ -106,7 +106,7 @@ struct window_procs tty_procs = {
 #ifdef MSDOS
      | WC_TILED_MAP | WC_ASCII_MAP
 #endif
-#if defined(WIN32)
+#if defined(WIN32CON)
      | WC_MOUSE_SUPPORT
 #endif
      | WC_COLOR | WC_HILITE_PET | WC_INVERSE | WC_EIGHT_BIT_IN),
@@ -120,7 +120,7 @@ struct window_procs tty_procs = {
 #endif
      | WC2_DARKGRAY | WC2_SUPPRESS_HIST | WC2_URGENT_MESG | WC2_STATUSLINES
      | WC2_U_UTF8STR
-#if !defined(NO_TERMS) || defined(WIN32)
+#if !defined(NO_TERMS) || defined(WIN32CON)
      | WC2_U_24BITCOLOR
 #endif
     ),
@@ -555,7 +555,7 @@ tty_preference_update(const char *pref)
         new_status_window();
     }
 
-#if defined(WIN32)
+#if defined(WIN32CON)
     consoletty_preference_update(pref);
 #else
     genl_preference_update(pref);
@@ -1531,7 +1531,7 @@ tty_exit_nhwindows(const char *str)
 #ifndef NO_TERMS    /*(until this gets added to the window interface)*/
     tty_shutdown(); /* cleanup termcap/terminfo/whatever */
 #endif
-#ifdef WIN32
+#ifdef WIN32CON
     consoletty_exit();
 #endif
     iflags.window_inited = 0;
@@ -4085,7 +4085,7 @@ end_glyphout(void)
 #endif
 }
 
-#ifndef WIN32
+#ifndef WIN32CON
 void
 g_putch(int in_ch)
 {
@@ -4125,7 +4125,7 @@ g_putch(int in_ch)
 
     return;
 }
-#endif /* !WIN32 */
+#endif /* !WIN32CON */
 
 #if defined(ENHANCED_SYMBOLS) && defined(UNIX)
 void