patch 8.0.0567: call for requesting color and ambiwidth is too early

Problem:    Call for requesting color and ambiwidth is too early. (Hirohito
            Higashi)
Solution:   Move the call down to below resetting "starting".

src/main.c

@@ -666,12 +666,6 @@ vim_main2(void)
 
     starttermcap();	    /* start termcap if not done by wait_return() */
     TIME_MSG("start termcap");
-#if defined(FEAT_TERMRESPONSE)
-# if defined(FEAT_MBYTE)
-    may_req_ambiguous_char_width();
-# endif
-    may_req_bg_color();
-#endif
 
 #ifdef FEAT_MOUSE
     setmouse();				/* may start using the mouse */
@@ -801,6 +795,11 @@ vim_main2(void)
     /* Requesting the termresponse is postponed until here, so that a "-c q"
      * argument doesn't make it appear in the shell Vim was started from. */
     may_req_termresponse();
+
+# if defined(FEAT_MBYTE)
+    may_req_ambiguous_char_width();
+# endif
+    may_req_bg_color();
 #endif
 
     /* start in insert mode */