Merge branch 'js/fast-export-paths-with-spaces' into maint

"git fast-export" produced an input stream for fast-import without
properly quoting pathnames when they contain SPs in them.

* js/fast-export-paths-with-spaces:
  fast-export: quote paths with spaces

builtin/fast-export.c

@@ -185,6 +185,8 @@ static void print_path(const char *path)
 	int need_quote = quote_c_style(path, NULL, NULL, 0);
 	if (need_quote)
 		quote_c_style(path, NULL, stdout, 0);
+	else if (strchr(path, ' '))
+		printf("\"%s\"", path);
 	else
 		printf("%s", path);
 }