spice: simple display

With that patch applied you'll actually see the guests screen in the
spice client.  This does *not* bring qxl and full spice support though.
This is basically the qxl vga mode made more generic, so it plays
together with any qemu-emulated gfx card.  You can display stdvga or
cirrus via spice client.  You can have both vnc and spice enabled and
clients connected at the same time.

vl.c

@@ -2931,6 +2931,8 @@ int main(int argc, char **argv, char **envp)
     /* just use the first displaystate for the moment */
     ds = get_displaystate();
 
+    if (using_spice)
+        display_remote++;
     if (display_type == DT_DEFAULT && !display_remote) {
 #if defined(CONFIG_SDL) || defined(CONFIG_COCOA)
         display_type = DT_SDL;
@@ -2973,6 +2975,11 @@ int main(int argc, char **argv, char **envp)
             printf("VNC server running on `%s'\n", vnc_display_local_addr(ds));
         }
     }
+#ifdef CONFIG_SPICE
+    if (using_spice) {
+        qemu_spice_display_init(ds);
+    }
+#endif
 
     /* display setup */
     dpy_resize(ds);