patch 8.0.1174: Mac Terminal.app has wrong color for white

Problem:    Mac Terminal.app has wrong color for white.
Solution:   Use white from the color cube.

Author: brammool

src/globals.h

@@ -380,6 +380,9 @@ EXTERN int	cterm_normal_bg_color INIT(= 0);
 EXTERN guicolor_T cterm_normal_fg_gui_color INIT(= INVALCOLOR);
 EXTERN guicolor_T cterm_normal_bg_gui_color INIT(= INVALCOLOR);
 #endif
+#ifdef FEAT_TERMRESPONSE
+EXTERN int	is_mac_terminal INIT(= FALSE);  /* recognized Terminal.app */
+#endif
 
 #ifdef FEAT_AUTOCMD
 EXTERN int	autocmd_busy INIT(= FALSE);	/* Is apply_autocmds() busy? */

src/syntax.c

@@ -7350,6 +7350,10 @@ lookup_color(int idx, int foreground, int *boldp)
 	    else
 		color = color_numbers_8[idx];
 	}
+	if (t_colors >= 256 && color == 15 && is_mac_terminal)
+	    /* Terminal.app has a bug: 15 is light grey. Use white
+	     * from the color cube instead. */
+	    color = 231;
     }
     return color;
 }

src/term.c

@@ -4557,7 +4557,10 @@ check_termcode(
 			/* Mac Terminal.app sends 1;95;0 */
 			if (version == 95
 				&& STRNCMP(tp + extra - 2, "1;95;0c", 7) == 0)
+			{
 			    is_not_xterm = TRUE;
+			    is_mac_terminal = TRUE;
+			}
 
 			/* Gnome terminal sends 1;3801;0, 1;4402;0 or 1;2501;0.
 			 * xfce4-terminal sends 1;2802;0.

src/version.c

@@ -761,6 +761,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1174,
 /**/
     1173,
 /**/