Merge branch 'js/use-bug-macro'

Developer support update, by using BUG() macro instead of die() to
mark codepaths that should not happen more clearly.

* js/use-bug-macro:
  BUG_exit_code: fix sparse "symbol not declared" warning
  Convert remaining die*(BUG) messages
  Replace all die("BUG: ...") calls by BUG() ones
  run-command: use BUG() to report bugs, not die()
  test-tool: help verifying BUG() code paths

builtin/config.c

@@ -398,7 +398,7 @@ static char *normalize_value(const char *key, const char *value)
 		return xstrdup(value);
 	}
 
-	die("BUG: cannot normalize type %d", type);
+	BUG("cannot normalize type %d", type);
 }
 
 static int get_color_found;